void ensure_pathname_nonexisting(const char *pathname) {
pid_t pid;
const char *u;
u = path_skip_slash_dotslash(pathname);
assert(*u);
debug(dbg_eachfile,"ensure_pathname_nonexisting `%s'",pathname);
if (!rmdir(pathname))
return; /* Deleted it OK, it was a directory. */
if (errno == ENOENT || errno == ELOOP) return;
if (errno == ENOTDIR) {
/* Either it's a file, or one of the path components is. If one
* of the path components is this will fail again ... */
if (secure_unlink(pathname) == 0)
return; /* OK, it was. */
if (errno == ENOTDIR) return;
}
if (errno != ENOTEMPTY && errno != EEXIST) { /* Huh? */
ohshite(_("unable to securely remove '%.255s'"), pathname);
}
pid = subproc_fork();
if (pid == 0) {
execlp(RM, "rm", "-rf", "--", pathname, NULL);
ohshite(_("unable to execute %s (%s)"), _("rm command for cleanup"), RM);
}
debug(dbg_eachfile,"ensure_pathname_nonexisting running rm -rf");
subproc_wait_check(pid, "rm cleanup", 0);
}
static int
do_script(struct pkginfo *pkg, struct pkgbin *pif,
struct command *cmd, struct stat *stab, int warn)
{
pid_t pid;
int r;
setexecute(cmd->filename, stab);
push_cleanup(cu_post_script_tasks, ehflag_bombout, NULL, 0, 0);
pid = subproc_fork();
if (pid == 0) {
if (setenv("DPKG_MAINTSCRIPT_PACKAGE", pkg->set->name, 1) ||
setenv("DPKG_MAINTSCRIPT_ARCH", pif->arch->name, 1) ||
setenv("DPKG_MAINTSCRIPT_NAME", cmd->argv[0], 1) ||
setenv("DPKG_RUNNING_VERSION", PACKAGE_VERSION, 1))
ohshite(_("unable to setenv for maintainer script"));
cmd->filename = cmd->argv[0] = preexecscript(cmd);
command_exec(cmd);
}
subproc_signals_setup(cmd->name); /* This does a push_cleanup(). */
r = subproc_wait_check(pid, cmd->name, warn);
pop_cleanup(ehflag_normaltidy);
pop_cleanup(ehflag_normaltidy);
return r;
}
static void
file_treewalk_feed(const char *dir, int fd_out)
{
int pipefd[2];
pid_t pid;
struct file_info *fi;
struct file_info *symlist = NULL;
struct file_info *symlist_end = NULL;
m_pipe(pipefd);
pid = subproc_fork();
if (pid == 0) {
m_dup2(pipefd[1], 1);
close(pipefd[0]);
close(pipefd[1]);
if (chdir(dir))
ohshite(_("failed to chdir to `%.255s'"), dir);
execlp(FIND, "find", ".", "-path", "./" BUILDCONTROLDIR, "-prune", "-o",
"-print0", NULL);
ohshite(_("unable to execute %s (%s)"), "find", FIND);
}
close(pipefd[1]);
/* We need to reorder the files so we can make sure that symlinks
* will not appear before their target. */
while ((fi = file_info_get(dir, pipefd[0])) != NULL) {
if (S_ISLNK(fi->st.st_mode)) {
file_info_list_append(&symlist, &symlist_end, fi);
} else {
if (fd_write(fd_out, fi->fn, strlen(fi->fn) + 1) < 0)
ohshite(_("failed to write filename to tar pipe (%s)"),
_("data member"));
file_info_free(fi);
}
}
close(pipefd[0]);
subproc_wait_check(pid, "find", 0);
for (fi = symlist; fi; fi = fi->next)
if (fd_write(fd_out, fi->fn, strlen(fi->fn) + 1) < 0)
ohshite(_("failed to write filename to tar pipe (%s)"), _("data member"));
file_info_list_free(symlist);
}
static void cu_info_prepare(int argc, void **argv) {
pid_t c1;
char *directory;
struct stat stab;
directory= (char*)(argv[0]);
if (chdir("/"))
ohshite(_("failed to chdir to `/' for cleanup"));
if (lstat(directory,&stab) && errno==ENOENT) return;
c1 = subproc_fork();
if (!c1) {
execlp(RM, "rm", "-rf", directory, NULL);
ohshite(_("unable to execute %s (%s)"), _("rm command for cleanup"), RM);
}
subproc_wait_check(c1, _("rm command for cleanup"), 0);
}
static void cu_info_prepare(int argc, void **argv) {
pid_t pid;
char *dir;
struct stat stab;
dir = argv[0];
if (lstat(dir, &stab) && errno == ENOENT)
return;
pid = subproc_fork();
if (pid == 0) {
if (chdir("/"))
ohshite(_("failed to chdir to `/' for cleanup"));
execlp(RM, "rm", "-rf", dir, NULL);
ohshite(_("unable to execute %s (%s)"), _("rm command for cleanup"), RM);
}
subproc_wait_check(pid, _("rm command for cleanup"), 0);
}
static char *
deb_field(const char *filename, const char *field)
{
pid_t pid;
int p[2];
struct varbuf buf = VARBUF_INIT;
char *end;
m_pipe(p);
pid = subproc_fork();
if (pid == 0) {
/* Child writes to pipe. */
m_dup2(p[1], 1);
close(p[0]);
close(p[1]);
execlp(BACKEND, BACKEND, "--field", filename, field, NULL);
ohshite(_("unable to execute %s (%s)"),
_("package field value extraction"), BACKEND);
}
close(p[1]);
/* Parant reads from pipe. */
varbuf_reset(&buf);
fd_vbuf_copy(p[0], &buf, -1, _("package field value extraction"));
varbuf_end_str(&buf);
close(p[0]);
subproc_wait_check(pid, _("package field value extraction"), PROCPIPE);
/* Trim down trailing junk. */
for (end = buf.buf + strlen(buf.buf) - 1; end - buf.buf >= 1; end--)
if (isspace(*end))
*end = '\0';
else
break;
return varbuf_detach(&buf);
}
static void
test_subproc_fork(void)
{
pid_t pid;
int ret;
/* Test exit(). */
pid = subproc_fork();
if (pid == 0)
exit(0);
ret = subproc_wait_check(pid, "subproc exit pass", PROCNOERR);
test_pass(ret == 0);
pid = subproc_fork();
if (pid == 0)
exit(128);
ret = subproc_wait_check(pid, "subproc exit fail", PROCNOERR);
test_pass(ret == 128);
/* Test signals. */
pid = subproc_fork();
if (pid == 0)
raise(SIGINT);
ret = subproc_wait_check(pid, "subproc signal", PROCWARN);
test_pass(ret == -1);
pid = subproc_fork();
if (pid == 0)
raise(SIGTERM);
ret = subproc_wait_check(pid, "subproc signal", PROCWARN);
test_pass(ret == -1);
pid = subproc_fork();
if (pid == 0)
raise(SIGPIPE);
ret = subproc_wait_check(pid, "subproc SIGPIPE", PROCWARN | PROCPIPE);
test_pass(ret == 0);
pid = subproc_fork();
if (pid == 0)
raise(SIGPIPE);
ret = subproc_wait_check(pid, "subproc SIGPIPE", PROCWARN);
test_pass(ret == -1);
}
/**
* Overly complex function that builds a .deb file.
*/
int
do_build(const char *const *argv)
{
struct dpkg_error err;
const char *debar, *dir;
bool subdir;
char *tfbuf;
int arfd;
int p1[2], p2[2], gzfd;
pid_t c1, c2;
/* Decode our arguments. */
dir = *argv++;
if (!dir)
badusage(_("--%s needs a <directory> argument"), cipaction->olong);
subdir = false;
debar = *argv++;
if (debar != NULL) {
struct stat debarstab;
if (*argv)
badusage(_("--%s takes at most two arguments"), cipaction->olong);
if (stat(debar, &debarstab)) {
if (errno != ENOENT)
ohshite(_("unable to check for existence of archive `%.250s'"), debar);
} else if (S_ISDIR(debarstab.st_mode)) {
subdir = true;
}
} else {
char *m;
m= m_malloc(strlen(dir) + sizeof(DEBEXT));
strcpy(m, dir);
path_trim_slash_slashdot(m);
strcat(m, DEBEXT);
debar= m;
}
/* Perform some sanity checks on the to-be-build package. */
if (nocheckflag) {
if (subdir)
ohshit(_("target is directory - cannot skip control file check"));
warning(_("not checking contents of control area"));
printf(_("dpkg-deb: building an unknown package in '%s'.\n"), debar);
} else {
struct pkginfo *pkg;
pkg = check_new_pkg(dir);
if (subdir)
debar = pkg_get_pathname(debar, pkg);
printf(_("dpkg-deb: building package `%s' in `%s'.\n"),
pkg->set->name, debar);
}
m_output(stdout, _("<standard output>"));
/* Now that we have verified everything its time to actually
* build something. Let's start by making the ar-wrapper. */
arfd = creat(debar, 0644);
if (arfd < 0)
ohshite(_("unable to create `%.255s'"), debar);
/* Fork a tar to package the control-section of the package. */
unsetenv("TAR_OPTIONS");
m_pipe(p1);
c1 = subproc_fork();
if (!c1) {
m_dup2(p1[1],1); close(p1[0]); close(p1[1]);
if (chdir(dir))
ohshite(_("failed to chdir to `%.255s'"), dir);
if (chdir(BUILDCONTROLDIR))
ohshite(_("failed to chdir to `%.255s'"), ".../DEBIAN");
execlp(TAR, "tar", "-cf", "-", "--format=gnu", ".", NULL);
ohshite(_("unable to execute %s (%s)"), "tar -cf", TAR);
}
close(p1[1]);
/* Create a temporary file to store the control data in. Immediately
* unlink our temporary file so others can't mess with it. */
tfbuf = path_make_temp_template("dpkg-deb");
gzfd = mkstemp(tfbuf);
if (gzfd == -1)
ohshite(_("failed to make temporary file (%s)"), _("control member"));
/* Make sure it's gone, the fd will remain until we close it. */
if (unlink(tfbuf))
ohshit(_("failed to unlink temporary file (%s), %s"), _("control member"),
tfbuf);
free(tfbuf);
/* And run gzip to compress our control archive. */
c2 = subproc_fork();
if (!c2) {
struct compress_params params;
params.type = compressor_type_gzip;
params.strategy = compressor_strategy_none;
params.level = 9;
compress_filter(¶ms, p1[0], gzfd, _("compressing control member"));
exit(0);
}
close(p1[0]);
subproc_wait_check(c2, "gzip -9c", 0);
subproc_wait_check(c1, "tar -cf", 0);
if (lseek(gzfd, 0, SEEK_SET))
ohshite(_("failed to rewind temporary file (%s)"), _("control member"));
/* We have our first file for the ar-archive. Write a header for it
* to the package and insert it. */
if (deb_format.major == 0) {
struct stat controlstab;
char versionbuf[40];
if (fstat(gzfd, &controlstab))
ohshite(_("failed to stat temporary file (%s)"), _("control member"));
sprintf(versionbuf, "%-8s\n%jd\n", OLDARCHIVEVERSION,
(intmax_t)controlstab.st_size);
if (fd_write(arfd, versionbuf, strlen(versionbuf)) < 0)
ohshite(_("error writing `%s'"), debar);
if (fd_fd_copy(gzfd, arfd, -1, &err) < 0)
ohshit(_("cannot copy '%s' into archive '%s': %s"), _("control member"),
debar, err.str);
} else if (deb_format.major == 2) {
const char deb_magic[] = ARCHIVEVERSION "\n";
dpkg_ar_put_magic(debar, arfd);
dpkg_ar_member_put_mem(debar, arfd, DEBMAGIC, deb_magic, strlen(deb_magic));
dpkg_ar_member_put_file(debar, arfd, ADMINMEMBER, gzfd, -1);
} else {
internerr("unknown deb format version %d.%d", deb_format.major, deb_format.minor);
}
close(gzfd);
/* Control is done, now we need to archive the data. */
if (deb_format.major == 0) {
/* In old format, the data member is just concatenated after the
* control member, so we do not need a temporary file and can use
* the compression file descriptor. */
gzfd = arfd;
} else if (deb_format.major == 2) {
/* Start by creating a new temporary file. Immediately unlink the
* temporary file so others can't mess with it. */
tfbuf = path_make_temp_template("dpkg-deb");
gzfd = mkstemp(tfbuf);
if (gzfd == -1)
ohshite(_("failed to make temporary file (%s)"), _("data member"));
/* Make sure it's gone, the fd will remain until we close it. */
if (unlink(tfbuf))
ohshit(_("failed to unlink temporary file (%s), %s"), _("data member"),
tfbuf);
free(tfbuf);
} else {
internerr("unknown deb format version %d.%d", deb_format.major, deb_format.minor);
}
/* Fork off a tar. We will feed it a list of filenames on stdin later. */
m_pipe(p1);
m_pipe(p2);
c1 = subproc_fork();
if (!c1) {
m_dup2(p1[0],0); close(p1[0]); close(p1[1]);
m_dup2(p2[1],1); close(p2[0]); close(p2[1]);
if (chdir(dir))
ohshite(_("failed to chdir to `%.255s'"), dir);
execlp(TAR, "tar", "-cf", "-", "--format=gnu", "--null", "-T", "-", "--no-recursion", NULL);
ohshite(_("unable to execute %s (%s)"), "tar -cf", TAR);
}
close(p1[0]);
close(p2[1]);
/* Of course we should not forget to compress the archive as well. */
c2 = subproc_fork();
if (!c2) {
close(p1[1]);
compress_filter(&compress_params, p2[0], gzfd, _("compressing data member"));
exit(0);
}
close(p2[0]);
/* All the pipes are set, now lets walk the tree, and start feeding
* filenames to tar. */
file_treewalk_feed(dir, p1[1]);
/* All done, clean up wait for tar and gzip to finish their job. */
close(p1[1]);
subproc_wait_check(c2, _("<compress> from tar -cf"), 0);
subproc_wait_check(c1, "tar -cf", 0);
/* Okay, we have data.tar as well now, add it to the ar wrapper. */
if (deb_format.major == 2) {
char datamember[16 + 1];
sprintf(datamember, "%s%s", DATAMEMBER,
compressor_get_extension(compress_params.type));
if (lseek(gzfd, 0, SEEK_SET))
ohshite(_("failed to rewind temporary file (%s)"), _("data member"));
dpkg_ar_member_put_file(debar, arfd, datamember, gzfd, -1);
close(gzfd);
}
if (fsync(arfd))
ohshite(_("unable to sync file '%s'"), debar);
if (close(arfd))
ohshite(_("unable to close file '%s'"), debar);
return 0;
}
/**
* Overly complex function that builds a .deb file.
*/
void do_build(const char *const *argv) {
static const char *const maintainerscripts[]= {
PREINSTFILE, POSTINSTFILE, PRERMFILE, POSTRMFILE, NULL
};
char *m;
const char *debar, *directory, *const *mscriptp, *versionstring, *arch;
bool subdir;
char *controlfile, *tfbuf;
struct pkginfo *checkedinfo;
struct arbitraryfield *field;
FILE *ar, *cf;
int p1[2], p2[2], p3[2], warns, n, c, gzfd;
pid_t c1,c2,c3;
struct stat controlstab, mscriptstab, debarstab;
char conffilename[MAXCONFFILENAME+1];
struct file_info *fi;
struct file_info *symlist = NULL;
struct file_info *symlist_end = NULL;
/* Decode our arguments. */
directory = *argv++;
if (!directory)
badusage(_("--%s needs a <directory> argument"), cipaction->olong);
subdir = false;
debar = *argv++;
if (debar != NULL) {
if (*argv) badusage(_("--build takes at most two arguments"));
if (debar) {
if (stat(debar,&debarstab)) {
if (errno != ENOENT)
ohshite(_("unable to check for existence of archive `%.250s'"),debar);
} else if (S_ISDIR(debarstab.st_mode)) {
subdir = true;
}
}
} else {
m= m_malloc(strlen(directory) + sizeof(DEBEXT));
strcpy(m, directory);
path_trim_slash_slashdot(m);
strcat(m, DEBEXT);
debar= m;
}
/* Perform some sanity checks on the to-be-build package. */
if (nocheckflag) {
if (subdir)
ohshit(_("target is directory - cannot skip control file check"));
warning(_("not checking contents of control area."));
printf(_("dpkg-deb: building an unknown package in '%s'.\n"), debar);
} else {
controlfile= m_malloc(strlen(directory) + sizeof(BUILDCONTROLDIR) +
sizeof(CONTROLFILE) + sizeof(CONFFILESFILE) +
sizeof(POSTINSTFILE) + sizeof(PREINSTFILE) +
sizeof(POSTRMFILE) + sizeof(PRERMFILE) +
MAXCONFFILENAME + 5);
/* Let's start by reading in the control-file so we can check its
* contents. */
strcpy(controlfile, directory);
strcat(controlfile, "/" BUILDCONTROLDIR "/" CONTROLFILE);
warns = 0;
parsedb(controlfile, pdb_recordavailable|pdb_rejectstatus,
&checkedinfo, &warns);
if (strspn(checkedinfo->name,
"abcdefghijklmnopqrstuvwxyz0123456789+-.")
!= strlen(checkedinfo->name))
ohshit(_("package name has characters that aren't lowercase alphanums or `-+.'"));
if (checkedinfo->priority == pri_other) {
warning(_("'%s' contains user-defined Priority value '%s'"),
controlfile, checkedinfo->otherpriority);
warns++;
}
for (field= checkedinfo->available.arbs; field; field= field->next) {
if (known_arbitrary_field(field))
continue;
warning(_("'%s' contains user-defined field '%s'"),
controlfile, field->name);
warns++;
}
if (subdir) {
versionstring= versiondescribe(&checkedinfo->available.version,vdew_never);
arch= checkedinfo->available.architecture; if (!arch) arch= "";
m= m_malloc(sizeof(DEBEXT)+1+strlen(debar)+1+strlen(checkedinfo->name)+
strlen(versionstring)+1+strlen(arch));
sprintf(m,"%s/%s_%s%s%s" DEBEXT,debar,checkedinfo->name,versionstring,
arch[0] ? "_" : "", arch);
debar= m;
}
printf(_("dpkg-deb: building package `%s' in `%s'.\n"), checkedinfo->name, debar);
/* Check file permissions. */
strcpy(controlfile, directory);
strcat(controlfile, "/" BUILDCONTROLDIR "/");
if (lstat(controlfile, &mscriptstab))
ohshite(_("unable to stat control directory"));
if (!S_ISDIR(mscriptstab.st_mode))
ohshit(_("control directory is not a directory"));
if ((mscriptstab.st_mode & 07757) != 0755)
ohshit(_("control directory has bad permissions %03lo (must be >=0755 "
"and <=0775)"), (unsigned long)(mscriptstab.st_mode & 07777));
for (mscriptp= maintainerscripts; *mscriptp; mscriptp++) {
strcpy(controlfile, directory);
strcat(controlfile, "/" BUILDCONTROLDIR "/");
strcat(controlfile, *mscriptp);
if (!lstat(controlfile,&mscriptstab)) {
if (S_ISLNK(mscriptstab.st_mode)) continue;
if (!S_ISREG(mscriptstab.st_mode))
ohshit(_("maintainer script `%.50s' is not a plain file or symlink"),*mscriptp);
if ((mscriptstab.st_mode & 07557) != 0555)
ohshit(_("maintainer script `%.50s' has bad permissions %03lo "
"(must be >=0555 and <=0775)"),
*mscriptp, (unsigned long)(mscriptstab.st_mode & 07777));
} else if (errno != ENOENT) {
ohshite(_("maintainer script `%.50s' is not stattable"),*mscriptp);
}
}
/* Check if conffiles contains sane information. */
strcpy(controlfile, directory);
strcat(controlfile, "/" BUILDCONTROLDIR "/" CONFFILESFILE);
if ((cf= fopen(controlfile,"r"))) {
struct file_info *conffiles_head = NULL;
struct file_info *conffiles_tail = NULL;
while (fgets(conffilename,MAXCONFFILENAME+1,cf)) {
n= strlen(conffilename);
if (!n) ohshite(_("empty string from fgets reading conffiles"));
if (conffilename[n-1] != '\n') {
warning(_("conffile name '%.50s...' is too long, or missing final newline"),
conffilename);
warns++;
while ((c= getc(cf)) != EOF && c != '\n');
continue;
}
conffilename[n - 1] = '\0';
strcpy(controlfile, directory);
strcat(controlfile, "/");
strcat(controlfile, conffilename);
if (lstat(controlfile,&controlstab)) {
if (errno == ENOENT) {
if((n > 1) && isspace(conffilename[n-2]))
warning(_("conffile filename '%s' contains trailing white spaces"),
conffilename);
ohshit(_("conffile `%.250s' does not appear in package"), conffilename);
} else
ohshite(_("conffile `%.250s' is not stattable"), conffilename);
} else if (!S_ISREG(controlstab.st_mode)) {
warning(_("conffile '%s' is not a plain file"), conffilename);
warns++;
}
if (file_info_find_name(conffiles_head, conffilename))
warning(_("conffile name '%s' is duplicated"), conffilename);
else {
struct file_info *conffile;
conffile = file_info_new(conffilename);
add_to_filist(&conffiles_head, &conffiles_tail, conffile);
}
}
free_filist(conffiles_head);
if (ferror(cf)) ohshite(_("error reading conffiles file"));
fclose(cf);
} else if (errno != ENOENT) {
ohshite(_("error opening conffiles file"));
}
if (warns)
warning(P_("ignoring %d warning about the control file(s)\n",
"ignoring %d warnings about the control file(s)\n", warns),
warns);
}
m_output(stdout, _("<standard output>"));
/* Now that we have verified everything its time to actually
* build something. Let's start by making the ar-wrapper. */
if (!(ar=fopen(debar,"wb"))) ohshite(_("unable to create `%.255s'"),debar);
if (setvbuf(ar, NULL, _IONBF, 0))
ohshite(_("unable to unbuffer `%.255s'"), debar);
/* Fork a tar to package the control-section of the package. */
unsetenv("TAR_OPTIONS");
m_pipe(p1);
c1 = subproc_fork();
if (!c1) {
m_dup2(p1[1],1); close(p1[0]); close(p1[1]);
if (chdir(directory)) ohshite(_("failed to chdir to `%.255s'"),directory);
if (chdir(BUILDCONTROLDIR))
ohshite(_("failed to chdir to `%.255s'"), ".../DEBIAN");
execlp(TAR, "tar", "-cf", "-", "--format=gnu", ".", NULL);
ohshite(_("unable to execute %s (%s)"), "tar -cf", TAR);
}
close(p1[1]);
/* Create a temporary file to store the control data in. Immediately
* unlink our temporary file so others can't mess with it. */
tfbuf = path_make_temp_template("dpkg-deb");
gzfd = mkstemp(tfbuf);
if (gzfd == -1)
ohshite(_("failed to make temporary file (%s)"), _("control member"));
/* Make sure it's gone, the fd will remain until we close it. */
if (unlink(tfbuf))
ohshit(_("failed to unlink temporary file (%s), %s"), _("control member"),
tfbuf);
free(tfbuf);
/* And run gzip to compress our control archive. */
c2 = subproc_fork();
if (!c2) {
m_dup2(p1[0],0); m_dup2(gzfd,1); close(p1[0]); close(gzfd);
compress_filter(&compressor_gzip, 0, 1, 9, _("control member"));
}
close(p1[0]);
subproc_wait_check(c2, "gzip -9c", 0);
subproc_wait_check(c1, "tar -cf", 0);
if (lseek(gzfd, 0, SEEK_SET))
ohshite(_("failed to rewind temporary file (%s)"), _("control member"));
/* We have our first file for the ar-archive. Write a header for it
* to the package and insert it. */
if (oldformatflag) {
if (fstat(gzfd, &controlstab))
ohshite(_("failed to stat temporary file (%s)"), _("control member"));
if (fprintf(ar, "%-8s\n%ld\n", OLDARCHIVEVERSION, (long)controlstab.st_size) == EOF)
werr(debar);
fd_fd_copy(gzfd, fileno(ar), -1, _("control member"));
} else {
const char deb_magic[] = ARCHIVEVERSION "\n";
dpkg_ar_put_magic(debar, fileno(ar));
dpkg_ar_member_put_mem(debar, fileno(ar), DEBMAGIC,
deb_magic, strlen(deb_magic));
dpkg_ar_member_put_file(debar, fileno(ar), ADMINMEMBER, gzfd);
}
/* Control is done, now we need to archive the data. Start by creating
* a new temporary file. Immediately unlink the temporary file so others
* can't mess with it. */
if (!oldformatflag) {
close(gzfd);
tfbuf = path_make_temp_template("dpkg-deb");
gzfd = mkstemp(tfbuf);
if (gzfd == -1)
ohshite(_("failed to make temporary file (%s)"), _("data member"));
/* Make sure it's gone, the fd will remain until we close it. */
if (unlink(tfbuf))
ohshit(_("failed to unlink temporary file (%s), %s"), _("data member"),
tfbuf);
free(tfbuf);
}
/* Fork off a tar. We will feed it a list of filenames on stdin later. */
m_pipe(p1);
m_pipe(p2);
c1 = subproc_fork();
if (!c1) {
m_dup2(p1[0],0); close(p1[0]); close(p1[1]);
m_dup2(p2[1],1); close(p2[0]); close(p2[1]);
if (chdir(directory)) ohshite(_("failed to chdir to `%.255s'"),directory);
execlp(TAR, "tar", "-cf", "-", "--format=gnu", "--null", "-T", "-", "--no-recursion", NULL);
ohshite(_("unable to execute %s (%s)"), "tar -cf", TAR);
}
close(p1[0]);
close(p2[1]);
/* Of course we should not forget to compress the archive as well. */
c2 = subproc_fork();
if (!c2) {
close(p1[1]);
m_dup2(p2[0],0); close(p2[0]);
m_dup2(oldformatflag ? fileno(ar) : gzfd,1);
compress_filter(compressor, 0, 1, compress_level, _("data member"));
}
close(p2[0]);
/* All the pipes are set, now lets run find, and start feeding
* filenames to tar. */
m_pipe(p3);
c3 = subproc_fork();
if (!c3) {
m_dup2(p3[1],1); close(p3[0]); close(p3[1]);
if (chdir(directory)) ohshite(_("failed to chdir to `%.255s'"),directory);
execlp(FIND, "find", ".", "-path", "./" BUILDCONTROLDIR, "-prune", "-o",
"-print0", NULL);
ohshite(_("unable to execute %s (%s)"), "find", FIND);
}
close(p3[1]);
/* We need to reorder the files so we can make sure that symlinks
* will not appear before their target. */
while ((fi=getfi(directory, p3[0]))!=NULL)
if (S_ISLNK(fi->st.st_mode))
add_to_filist(&symlist, &symlist_end, fi);
else {
if (write(p1[1], fi->fn, strlen(fi->fn)+1) ==- 1)
ohshite(_("failed to write filename to tar pipe (%s)"),
_("data member"));
file_info_free(fi);
}
close(p3[0]);
subproc_wait_check(c3, "find", 0);
for (fi= symlist;fi;fi= fi->next)
if (write(p1[1], fi->fn, strlen(fi->fn)+1) == -1)
ohshite(_("failed to write filename to tar pipe (%s)"), _("data member"));
/* All done, clean up wait for tar and gzip to finish their job. */
close(p1[1]);
free_filist(symlist);
subproc_wait_check(c2, _("<compress> from tar -cf"), 0);
subproc_wait_check(c1, "tar -cf", 0);
/* Okay, we have data.tar as well now, add it to the ar wrapper. */
if (!oldformatflag) {
char datamember[16 + 1];
sprintf(datamember, "%s%s", DATAMEMBER, compressor->extension);
if (lseek(gzfd, 0, SEEK_SET))
ohshite(_("failed to rewind temporary file (%s)"), _("data member"));
dpkg_ar_member_put_file(debar, fileno(ar), datamember, gzfd);
}
if (fflush(ar))
ohshite(_("unable to flush file '%s'"), debar);
if (fsync(fileno(ar)))
ohshite(_("unable to sync file '%s'"), debar);
if (fclose(ar)) werr(debar);
exit(0);
}
void process_archive(const char *filename) {
static const struct tar_operations tf = {
.read = tarfileread,
.extract_file = tarobject,
.link = tarobject,
.symlink = tarobject,
.mkdir = tarobject,
.mknod = tarobject,
};
/* These need to be static so that we can pass their addresses to
* push_cleanup as arguments to the cu_xxx routines; if an error occurs
* we unwind the stack before processing the cleanup list, and these
* variables had better still exist ... */
static int p1[2];
static char *cidir = NULL;
static struct fileinlist *newconffiles, *newfileslist;
static enum pkgstatus oldversionstatus;
static struct varbuf depprobwhy;
static struct tarcontext tc;
int r, i;
pid_t pid;
struct pkgiterator *it;
struct pkginfo *pkg, *otherpkg;
char *cidirrest, *p;
char conffilenamebuf[MAXCONFFILENAME];
char *psize;
const char *pfilename;
struct fileinlist *newconff, **newconffileslastp;
struct fileinlist *cfile;
struct reversefilelistiter rlistit;
struct conffile *searchconff, **iconffileslastp, *newiconff;
struct dependency *dsearch, *newdeplist, **newdeplistlastp;
struct dependency *newdep, *dep, *providecheck;
struct deppossi *psearch, **newpossilastp, *possi, *newpossi, *pdep;
FILE *conff;
struct filenamenode *namenode;
struct stat stab, oldfs;
struct pkg_deconf_list *deconpil, *deconpiltemp;
struct pkginfo *fixbytrigaw;
cleanup_pkg_failed= cleanup_conflictor_failed= 0;
pfilename = summarize_filename(filename);
if (stat(filename,&stab)) ohshite(_("cannot access archive"));
/* We can't ‘tentatively-reassemble’ packages. */
if (!f_noact) {
if (!deb_reassemble(&filename, &pfilename))
return;
}
/* Verify the package. */
if (!f_nodebsig)
deb_verify(filename);
/* Get the control information directory. */
cidir = get_control_dir(cidir);
cidirrest = cidir + strlen(cidir);
push_cleanup(cu_cidir, ~0, NULL, 0, 2, (void *)cidir, (void *)cidirrest);
pid = subproc_fork();
if (pid == 0) {
cidirrest[-1] = '\0';
execlp(BACKEND, BACKEND, "--control", filename, cidir, NULL);
ohshite(_("unable to execute %s (%s)"),
_("package control information extraction"), BACKEND);
}
subproc_wait_check(pid, BACKEND " --control", 0);
/* We want to guarantee the extracted files are on the disk, so that the
* subsequent renames to the info database do not end up with old or zero
* length files in case of a system crash. As neither dpkg-deb nor tar do
* explicit fsync()s, we have to do them here.
* XXX: This could be avoided by switching to an internal tar extractor. */
dir_sync_contents(cidir);
strcpy(cidirrest,CONTROLFILE);
parsedb(cidir, pdb_parse_binary | pdb_ignorefiles | parsedb_force_flags(),
&pkg);
if (!pkg->files) {
pkg->files= nfmalloc(sizeof(struct filedetails));
pkg->files->next = NULL;
pkg->files->name = pkg->files->msdosname = pkg->files->md5sum = NULL;
}
/* Always nfmalloc. Otherwise, we may overwrite some other field (like
* md5sum). */
psize = nfmalloc(30);
sprintf(psize, "%jd", (intmax_t)stab.st_size);
pkg->files->size = psize;
if (cipaction->arg_int == act_avail) {
printf(_("Recorded info about %s from %s.\n"),
pkgbin_name(pkg, &pkg->available, pnaw_nonambig), pfilename);
pop_cleanup(ehflag_normaltidy);
return;
}
if (pkg->available.arch->type != arch_all &&
pkg->available.arch->type != arch_native)
forcibleerr(fc_architecture,
_("package architecture (%s) does not match system (%s)"),
pkg->available.arch->name, dpkg_arch_get(arch_native)->name);
for (deconpil= deconfigure;
deconpil;
deconpil= deconpiltemp) {
deconpiltemp= deconpil->next;
free(deconpil);
}
deconfigure = NULL;
clear_istobes();
if (!wanttoinstall(pkg)) {
pop_cleanup(ehflag_normaltidy);
return;
}
/* Check if anything is installed that we conflict with, or not installed
* that we need. */
pkg->clientdata->istobe= itb_installnew;
for (dsearch= pkg->available.depends; dsearch; dsearch= dsearch->next) {
switch (dsearch->type) {
case dep_conflicts:
/* Look for things we conflict with. */
check_conflict(dsearch, pkg, pfilename);
break;
case dep_breaks:
/* Look for things we break. */
check_breaks(dsearch, pkg, pfilename);
break;
case dep_provides:
/* Look for things that conflict with what we provide. */
for (psearch = dsearch->list->ed->depended.installed;
psearch;
psearch = psearch->rev_next) {
if (psearch->up->type != dep_conflicts)
continue;
check_conflict(psearch->up, pkg, pfilename);
}
break;
case dep_suggests:
case dep_recommends:
case dep_depends:
case dep_replaces:
case dep_enhances:
/* Ignore these here. */
break;
case dep_predepends:
if (!depisok(dsearch, &depprobwhy, NULL, &fixbytrigaw, true)) {
if (fixbytrigaw) {
while (fixbytrigaw->trigaw.head)
trigproc(fixbytrigaw->trigaw.head->pend);
} else {
varbuf_end_str(&depprobwhy);
fprintf(stderr, _("dpkg: regarding %s containing %s, pre-dependency problem:\n%s"),
pfilename, pkgbin_name(pkg, &pkg->available, pnaw_nonambig),
depprobwhy.buf);
if (!force_depends(dsearch->list))
ohshit(_("pre-dependency problem - not installing %.250s"),
pkgbin_name(pkg, &pkg->available, pnaw_nonambig));
warning(_("ignoring pre-dependency problem!"));
}
}
}
}
/* Look for things that conflict with us. */
for (psearch = pkg->set->depended.installed; psearch; psearch = psearch->rev_next) {
if (psearch->up->type != dep_conflicts) continue;
check_conflict(psearch->up, pkg, pfilename);
}
ensure_allinstfiles_available();
filesdbinit();
trig_file_interests_ensure();
if (pkg->status != stat_notinstalled && pkg->status != stat_configfiles) {
printf(_("Preparing to replace %s %s (using %s) ...\n"),
pkg_name(pkg, pnaw_nonambig),
versiondescribe(&pkg->installed.version,vdew_nonambig),
pfilename);
log_action("upgrade", pkg, &pkg->installed);
} else {
printf(_("Unpacking %s (from %s) ...\n"),
pkgbin_name(pkg, &pkg->available, pnaw_nonambig), pfilename);
log_action("install", pkg, &pkg->available);
}
if (f_noact) {
pop_cleanup(ehflag_normaltidy);
return;
}
/*
* OK, we're going ahead.
*/
trig_activate_packageprocessing(pkg);
strcpy(cidirrest, TRIGGERSCIFILE);
trig_parse_ci(cidir, NULL, trig_cicb_statuschange_activate, pkg, &pkg->available);
/* Read the conffiles, and copy the hashes across. */
newconffiles = NULL;
newconffileslastp = &newconffiles;
push_cleanup(cu_fileslist, ~0, NULL, 0, 0);
strcpy(cidirrest,CONFFILESFILE);
conff= fopen(cidir,"r");
if (conff) {
push_cleanup(cu_closestream, ehflag_bombout, NULL, 0, 1, (void *)conff);
while (fgets(conffilenamebuf,MAXCONFFILENAME-2,conff)) {
struct filepackages_iterator *iter;
p= conffilenamebuf + strlen(conffilenamebuf);
assert(p != conffilenamebuf);
if (p[-1] != '\n')
ohshit(_("name of conffile (starting `%.250s') is too long (>%d characters)"),
conffilenamebuf, MAXCONFFILENAME);
while (p > conffilenamebuf && isspace(p[-1])) --p;
if (p == conffilenamebuf) continue;
*p = '\0';
namenode= findnamenode(conffilenamebuf, 0);
namenode->oldhash= NEWCONFFILEFLAG;
newconff= newconff_append(&newconffileslastp, namenode);
/* Let's see if any packages have this file. If they do we
* check to see if they listed it as a conffile, and if they did
* we copy the hash across. Since (for plain file conffiles,
* which is the only kind we are supposed to have) there will
* only be one package which ‘has’ the file, this will usually
* mean we only look in the package which we're installing now.
* The ‘conffiles’ data in the status file is ignored when a
* package isn't also listed in the file ownership database as
* having that file. If several packages are listed as owning
* the file we pick one at random. */
searchconff = NULL;
iter = filepackages_iter_new(newconff->namenode);
while ((otherpkg = filepackages_iter_next(iter))) {
debug(dbg_conffdetail,
"process_archive conffile `%s' in package %s - conff ?",
newconff->namenode->name, pkg_name(otherpkg, pnaw_nonambig));
for (searchconff = otherpkg->installed.conffiles;
searchconff && strcmp(newconff->namenode->name, searchconff->name);
searchconff = searchconff->next)
debug(dbg_conffdetail,
"process_archive conffile `%s' in package %s - conff ? not `%s'",
newconff->namenode->name, pkg_name(otherpkg, pnaw_nonambig),
searchconff->name);
if (searchconff) {
debug(dbg_conff,
"process_archive conffile `%s' package=%s %s hash=%s",
newconff->namenode->name, pkg_name(otherpkg, pnaw_nonambig),
otherpkg == pkg ? "same" : "different!",
searchconff->hash);
if (otherpkg == pkg)
break;
}
}
filepackages_iter_free(iter);
if (searchconff) {
newconff->namenode->oldhash= searchconff->hash;
/* We don't copy ‘obsolete’; it's not obsolete in the new package. */
} else {
debug(dbg_conff,"process_archive conffile `%s' no package, no hash",
newconff->namenode->name);
}
newconff->namenode->flags |= fnnf_new_conff;
}
if (ferror(conff)) ohshite(_("read error in %.250s"),cidir);
pop_cleanup(ehflag_normaltidy); /* conff = fopen() */
if (fclose(conff)) ohshite(_("error closing %.250s"),cidir);
} else {
if (errno != ENOENT) ohshite(_("error trying to open %.250s"),cidir);
}
/* All the old conffiles are marked with a flag, so that we don't delete
* them if they seem to disappear completely. */
oldconffsetflags(pkg->installed.conffiles);
for (i = 0 ; i < cflict_index ; i++) {
oldconffsetflags(conflictor[i]->installed.conffiles);
}
oldversionstatus= pkg->status;
assert(oldversionstatus <= stat_installed);
debug(dbg_general,"process_archive oldversionstatus=%s",
statusstrings[oldversionstatus]);
if (oldversionstatus == stat_halfconfigured ||
oldversionstatus == stat_triggersawaited ||
oldversionstatus == stat_triggerspending ||
oldversionstatus == stat_installed) {
pkg_set_eflags(pkg, eflag_reinstreq);
pkg_set_status(pkg, stat_halfconfigured);
modstatdb_note(pkg);
push_cleanup(cu_prermupgrade, ~ehflag_normaltidy, NULL, 0, 1, (void *)pkg);
if (versioncompare(&pkg->available.version,
&pkg->installed.version) >= 0) /* Upgrade or reinstall */
maintainer_script_alternative(pkg, PRERMFILE, "pre-removal", cidir, cidirrest,
"upgrade", "failed-upgrade");
else /* Downgrade => no fallback */
maintainer_script_installed(pkg, PRERMFILE, "pre-removal", "upgrade",
versiondescribe(&pkg->available.version,
vdew_nonambig), NULL);
pkg_set_status(pkg, stat_unpacked);
oldversionstatus= stat_unpacked;
modstatdb_note(pkg);
}
for (deconpil= deconfigure; deconpil; deconpil= deconpil->next) {
struct pkginfo *removing = deconpil->pkg_removal;
if (removing)
printf(_("De-configuring %s, to allow removal of %s ...\n"),
pkg_name(deconpil->pkg, pnaw_nonambig),
pkg_name(removing, pnaw_nonambig));
else
printf(_("De-configuring %s ...\n"),
pkg_name(deconpil->pkg, pnaw_nonambig));
trig_activate_packageprocessing(deconpil->pkg);
pkg_set_status(deconpil->pkg, stat_halfconfigured);
modstatdb_note(deconpil->pkg);
/* This means that we *either* go and run postinst abort-deconfigure,
* *or* queue the package for later configure processing, depending
* on which error cleanup route gets taken. */
push_cleanup(cu_prermdeconfigure, ~ehflag_normaltidy,
ok_prermdeconfigure, ehflag_normaltidy,
3, (void*)deconpil->pkg, (void*)removing, (void*)pkg);
if (removing) {
maintainer_script_installed(deconpil->pkg, PRERMFILE, "pre-removal",
"deconfigure", "in-favour", pkg->set->name,
versiondescribe(&pkg->available.version,
vdew_nonambig),
"removing", removing->set->name,
versiondescribe(&removing->installed.version,
vdew_nonambig),
NULL);
} else {
maintainer_script_installed(deconpil->pkg, PRERMFILE, "pre-removal",
"deconfigure", "in-favour", pkg->set->name,
versiondescribe(&pkg->available.version,
vdew_nonambig),
NULL);
}
}
for (i = 0 ; i < cflict_index; i++) {
if (!(conflictor[i]->status == stat_halfconfigured ||
conflictor[i]->status == stat_triggersawaited ||
conflictor[i]->status == stat_triggerspending ||
conflictor[i]->status == stat_installed)) continue;
trig_activate_packageprocessing(conflictor[i]);
pkg_set_status(conflictor[i], stat_halfconfigured);
modstatdb_note(conflictor[i]);
push_cleanup(cu_prerminfavour, ~ehflag_normaltidy, NULL, 0,
2,(void*)conflictor[i],(void*)pkg);
maintainer_script_installed(conflictor[i], PRERMFILE, "pre-removal",
"remove", "in-favour", pkg->set->name,
versiondescribe(&pkg->available.version,
vdew_nonambig),
NULL);
pkg_set_status(conflictor[i], stat_halfinstalled);
modstatdb_note(conflictor[i]);
}
pkg_set_eflags(pkg, eflag_reinstreq);
if (pkg->status == stat_notinstalled)
pkg->installed.version= pkg->available.version;
pkg_set_status(pkg, stat_halfinstalled);
modstatdb_note(pkg);
if (oldversionstatus == stat_notinstalled) {
push_cleanup(cu_preinstverynew, ~ehflag_normaltidy, NULL, 0,
3,(void*)pkg,(void*)cidir,(void*)cidirrest);
maintainer_script_new(pkg, PREINSTFILE, "pre-installation", cidir, cidirrest,
"install", NULL);
} else if (oldversionstatus == stat_configfiles) {
push_cleanup(cu_preinstnew, ~ehflag_normaltidy, NULL, 0,
3,(void*)pkg,(void*)cidir,(void*)cidirrest);
maintainer_script_new(pkg, PREINSTFILE, "pre-installation", cidir, cidirrest,
"install", versiondescribe(&pkg->installed.version,
vdew_nonambig),
NULL);
} else {
push_cleanup(cu_preinstupgrade, ~ehflag_normaltidy, NULL, 0,
4,(void*)pkg,(void*)cidir,(void*)cidirrest,(void*)&oldversionstatus);
maintainer_script_new(pkg, PREINSTFILE, "pre-installation", cidir, cidirrest,
"upgrade", versiondescribe(&pkg->installed.version,
vdew_nonambig),
NULL);
printf(_("Unpacking replacement %.250s ...\n"),
pkgbin_name(pkg, &pkg->available, pnaw_nonambig));
}
/*
* Now we unpack the archive, backing things up as we go.
* For each file, we check to see if it already exists.
* There are several possibilities:
*
* + We are trying to install a non-directory ...
* - It doesn't exist. In this case we simply extract it.
* - It is a plain file, device, symlink, &c. We do an ‘atomic
* overwrite’ using link() and rename(), but leave a backup copy.
* Later, when we delete the backup, we remove it from any other
* packages' lists.
* - It is a directory. In this case it depends on whether we're
* trying to install a symlink or something else.
* = If we're not trying to install a symlink we move the directory
* aside and extract the node. Later, when we recursively remove
* the backed-up directory, we remove it from any other packages'
* lists.
* = If we are trying to install a symlink we do nothing - ie,
* dpkg will never replace a directory tree with a symlink. This
* is to avoid embarrassing effects such as replacing a directory
* tree with a link to a link to the original directory tree.
* + We are trying to install a directory ...
* - It doesn't exist. We create it with the appropriate modes.
* - It exists as a directory or a symlink to one. We do nothing.
* - It is a plain file or a symlink (other than to a directory).
* We move it aside and create the directory. Later, when we
* delete the backup, we remove it from any other packages' lists.
*
* Install non-dir Install symlink Install dir
* Exists not X X X
* File/node/symlink LXR LXR BXR
* Directory BXR - -
*
* X: extract file/node/link/directory
* LX: atomic overwrite leaving backup
* B: ordinary backup
* R: later remove from other packages' lists
* -: do nothing
*
* After we've done this we go through the remaining things in the
* lists of packages we're trying to remove (including the old
* version of the current package). This happens in reverse order,
* so that we process files before the directories (or symlinks-to-
* directories) containing them.
*
* + If the thing is a conffile then we leave it alone for the purge
* operation.
* + Otherwise, there are several possibilities too:
* - The listed thing does not exist. We ignore it.
* - The listed thing is a directory or a symlink to a directory.
* We delete it only if it isn't listed in any other package.
* - The listed thing is not a directory, but was part of the package
* that was upgraded, we check to make sure the files aren't the
* same ones from the old package by checking dev/inode
* - The listed thing is not a directory or a symlink to one (ie,
* it's a plain file, device, pipe, &c, or a symlink to one, or a
* dangling symlink). We delete it.
*
* The removed packages' list becomes empty (of course, the new
* version of the package we're installing will have a new list,
* which replaces the old version's list).
*
* If at any stage we remove a file from a package's list, and the
* package isn't one we're already processing, and the package's
* list becomes empty as a result, we ‘vanish’ the package. This
* means that we run its postrm with the ‘disappear’ argument, and
* put the package in the ‘not-installed’ state. If it had any
* conffiles, their hashes and ownership will have been transferred
* already, so we just ignore those and forget about them from the
* point of view of the disappearing package.
*
* NOTE THAT THE OLD POSTRM IS RUN AFTER THE NEW PREINST, since the
* files get replaced ‘as we go’.
*/
m_pipe(p1);
push_cleanup(cu_closepipe, ehflag_bombout, NULL, 0, 1, (void *)&p1[0]);
pid = subproc_fork();
if (pid == 0) {
m_dup2(p1[1],1); close(p1[0]); close(p1[1]);
execlp(BACKEND, BACKEND, "--fsys-tarfile", filename, NULL);
ohshite(_("unable to execute %s (%s)"),
_("package filesystem archive extraction"), BACKEND);
}
close(p1[1]);
p1[1] = -1;
newfileslist = NULL;
tc.newfilesp = &newfileslist;
push_cleanup(cu_fileslist, ~0, NULL, 0, 0);
tc.pkg= pkg;
tc.backendpipe= p1[0];
r = tar_extractor(&tc, &tf);
if (r) {
if (errno) {
ohshite(_("error reading dpkg-deb tar output"));
} else {
ohshit(_("corrupted filesystem tarfile - corrupted package archive"));
}
}
fd_skip(p1[0], -1, _("dpkg-deb: zap possible trailing zeros"));
close(p1[0]);
p1[0] = -1;
subproc_wait_check(pid, BACKEND " --fsys-tarfile", PROCPIPE);
tar_deferred_extract(newfileslist, pkg);
if (oldversionstatus == stat_halfinstalled || oldversionstatus == stat_unpacked) {
/* Packages that were in ‘installed’ and ‘postinstfailed’ have been
* reduced to ‘unpacked’ by now, by the running of the prerm script. */
pkg_set_status(pkg, stat_halfinstalled);
modstatdb_note(pkg);
push_cleanup(cu_postrmupgrade, ~ehflag_normaltidy, NULL, 0, 1, (void *)pkg);
maintainer_script_alternative(pkg, POSTRMFILE, "post-removal", cidir, cidirrest,
"upgrade", "failed-upgrade");
}
/* If anything goes wrong while tidying up it's a bit late to do
* anything about it. However, we don't install the new status
* info yet, so that a future dpkg installation will put everything
* right (we hope).
*
* If something does go wrong later the ‘conflictor’ package will be
* left in the ‘removal_failed’ state. Removing or installing it
* will be impossible if it was required because of the conflict with
* the package we're installing now and (presumably) the dependency
* by other packages. This means that the files it contains in
* common with this package will hang around until we successfully
* get this package installed, after which point we can trust the
* conflicting package's file list, which will have been updated to
* remove any files in this package. */
push_checkpoint(~ehflag_bombout, ehflag_normaltidy);
/* Now we delete all the files that were in the old version of
* the package only, except (old or new) conffiles, which we leave
* alone. */
reversefilelist_init(&rlistit,pkg->clientdata->files);
while ((namenode= reversefilelist_next(&rlistit))) {
struct filenamenode *usenode;
if ((namenode->flags & fnnf_new_conff) ||
(namenode->flags & fnnf_new_inarchive))
continue;
usenode = namenodetouse(namenode, pkg, &pkg->installed);
trig_file_activate(usenode, pkg);
varbuf_trunc(&fnamevb, fnameidlu);
varbuf_add_str(&fnamevb, usenode->name);
varbuf_end_str(&fnamevb);
if (!stat(namenode->name,&stab) && S_ISDIR(stab.st_mode)) {
debug(dbg_eachfiledetail, "process_archive: %s is a directory",
namenode->name);
if (dir_is_used_by_others(namenode, pkg))
continue;
}
if (lstat(fnamevb.buf, &oldfs)) {
if (!(errno == ENOENT || errno == ELOOP || errno == ENOTDIR))
warning(_("could not stat old file '%.250s' so not deleting it: %s"),
fnamevb.buf, strerror(errno));
continue;
}
if (S_ISDIR(oldfs.st_mode)) {
if (rmdir(fnamevb.buf)) {
warning(_("unable to delete old directory '%.250s': %s"),
namenode->name, strerror(errno));
} else if ((namenode->flags & fnnf_old_conff)) {
warning(_("old conffile '%.250s' was an empty directory "
"(and has now been deleted)"), namenode->name);
}
} else {
struct fileinlist *sameas = NULL;
static struct stat empty_stat;
struct varbuf cfilename = VARBUF_INIT;
/*
* Ok, it's an old file, but is it really not in the new package?
* It might be known by a different name because of symlinks.
*
* We need to check to make sure, so we stat the file, then compare
* it to the new list. If we find a dev/inode match, we assume they
* are the same file, and leave it alone. NOTE: we don't check in
* other packages for sanity reasons (we don't want to stat _all_
* the files on the system).
*
* We run down the list of _new_ files in this package. This keeps
* the process a little leaner. We are only worried about new ones
* since ones that stayed the same don't really apply here.
*/
/* If we can't stat the old or new file, or it's a directory,
* we leave it up to the normal code. */
debug(dbg_eachfile, "process_archive: checking %s for same files on "
"upgrade/downgrade", fnamevb.buf);
for (cfile= newfileslist; cfile; cfile= cfile->next) {
/* If the file has been filtered then treat it as if it didn't exist
* on the file system. */
if (cfile->namenode->flags & fnnf_filtered)
continue;
if (!cfile->namenode->filestat) {
struct stat tmp_stat;
varbuf_reset(&cfilename);
varbuf_add_str(&cfilename, instdir);
varbuf_add_char(&cfilename, '/');
varbuf_add_str(&cfilename, cfile->namenode->name);
varbuf_end_str(&cfilename);
if (lstat(cfilename.buf, &tmp_stat) == 0) {
cfile->namenode->filestat = nfmalloc(sizeof(struct stat));
memcpy(cfile->namenode->filestat, &tmp_stat, sizeof(struct stat));
} else {
if (!(errno == ENOENT || errno == ELOOP || errno == ENOTDIR))
ohshite(_("unable to stat other new file `%.250s'"),
cfile->namenode->name);
cfile->namenode->filestat = &empty_stat;
continue;
}
}
if (cfile->namenode->filestat == &empty_stat)
continue;
if (oldfs.st_dev == cfile->namenode->filestat->st_dev &&
oldfs.st_ino == cfile->namenode->filestat->st_ino) {
if (sameas)
warning(_("old file '%.250s' is the same as several new files! "
"(both '%.250s' and '%.250s')"), fnamevb.buf,
sameas->namenode->name, cfile->namenode->name);
sameas= cfile;
debug(dbg_eachfile, "process_archive: not removing %s,"
" since it matches %s", fnamevb.buf, cfile->namenode->name);
}
}
varbuf_destroy(&cfilename);
if ((namenode->flags & fnnf_old_conff)) {
if (sameas) {
if (sameas->namenode->flags & fnnf_new_conff) {
if (!strcmp(sameas->namenode->oldhash, NEWCONFFILEFLAG)) {
sameas->namenode->oldhash= namenode->oldhash;
debug(dbg_eachfile, "process_archive: old conff %s"
" is same as new conff %s, copying hash",
namenode->name, sameas->namenode->name);
} else {
debug(dbg_eachfile, "process_archive: old conff %s"
" is same as new conff %s but latter already has hash",
namenode->name, sameas->namenode->name);
}
}
} else {
debug(dbg_eachfile, "process_archive: old conff %s"
" is disappearing", namenode->name);
namenode->flags |= fnnf_obs_conff;
newconff_append(&newconffileslastp, namenode);
addfiletolist(&tc, namenode);
}
continue;
}
if (sameas)
continue;
if (secure_unlink_statted(fnamevb.buf, &oldfs)) {
warning(_("unable to securely remove old file '%.250s': %s"),
namenode->name, strerror(errno));
}
} /* !S_ISDIR */
}
/* OK, now we can write the updated files-in-this package list,
* since we've done away (hopefully) with all the old junk. */
write_filelist_except(pkg, &pkg->available, newfileslist, 0);
/* Trigger interests may have changed.
* Firstly we go through the old list of interests deleting them.
* Then we go through the new list adding them. */
strcpy(cidirrest, TRIGGERSCIFILE);
trig_parse_ci(pkgadminfile(pkg, &pkg->installed, TRIGGERSCIFILE),
trig_cicb_interest_delete, NULL, pkg, &pkg->installed);
trig_parse_ci(cidir, trig_cicb_interest_add, NULL, pkg, &pkg->available);
trig_file_interests_save();
/* We also install the new maintainer scripts, and any other
* cruft that may have come along with the package. First
* we go through the existing scripts replacing or removing
* them as appropriate; then we go through the new scripts
* (any that are left) and install them. */
debug(dbg_general, "process_archive updating info directory");
pkg_infodb_update(pkg, cidir, cidirrest);
/*
* Update the status database.
*
* This involves copying each field across from the ‘available’
* to the ‘installed’ half of the pkg structure.
* For some of the fields we have to do a complicated construction
* operation; for others we can just copy the value.
* We tackle the fields in the order they appear, so that
* we don't miss any out :-).
* At least we don't have to copy any strings that are referred
* to, because these are never modified and never freed.
*/
/* The dependencies are the most difficult. We have to build
* a whole new forward dependency tree. At least the reverse
* links (linking our deppossi's into the reverse chains)
* can be done by copy_dependency_links. */
newdeplist = NULL;
newdeplistlastp = &newdeplist;
for (dep= pkg->available.depends; dep; dep= dep->next) {
newdep= nfmalloc(sizeof(struct dependency));
newdep->up= pkg;
newdep->next = NULL;
newdep->list = NULL;
newpossilastp = &newdep->list;
for (possi= dep->list; possi; possi= possi->next) {
newpossi= nfmalloc(sizeof(struct deppossi));
newpossi->up= newdep;
newpossi->ed= possi->ed;
newpossi->next = NULL;
newpossi->rev_next = newpossi->rev_prev = NULL;
newpossi->arch_is_implicit = possi->arch_is_implicit;
newpossi->arch = possi->arch;
newpossi->verrel= possi->verrel;
if (possi->verrel != dvr_none)
newpossi->version= possi->version;
else
blankversion(&newpossi->version);
newpossi->cyclebreak = false;
*newpossilastp= newpossi;
newpossilastp= &newpossi->next;
}
newdep->type= dep->type;
*newdeplistlastp= newdep;
newdeplistlastp= &newdep->next;
}
/* Right, now we've replicated the forward tree, we
* get copy_dependency_links to remove all the old dependency
* structures from the reverse links and add the new dependency
* structures in instead. It also copies the new dependency
* structure pointer for this package into the right field. */
copy_dependency_links(pkg,&pkg->installed.depends,newdeplist,0);
/* We copy the text fields. */
pkg->installed.essential= pkg->available.essential;
pkg->installed.multiarch = pkg->available.multiarch;
pkg->installed.description= pkg->available.description;
pkg->installed.maintainer= pkg->available.maintainer;
pkg->installed.source= pkg->available.source;
pkg->installed.arch = pkg->available.arch;
pkg->installed.installedsize= pkg->available.installedsize;
pkg->installed.version= pkg->available.version;
pkg->installed.origin = pkg->available.origin;
pkg->installed.bugs = pkg->available.bugs;
/* We have to generate our own conffiles structure. */
pkg->installed.conffiles = NULL;
iconffileslastp = &pkg->installed.conffiles;
for (cfile= newconffiles; cfile; cfile= cfile->next) {
newiconff= nfmalloc(sizeof(struct conffile));
newiconff->next = NULL;
newiconff->name= nfstrsave(cfile->namenode->name);
newiconff->hash= nfstrsave(cfile->namenode->oldhash);
newiconff->obsolete= !!(cfile->namenode->flags & fnnf_obs_conff);
*iconffileslastp= newiconff;
iconffileslastp= &newiconff->next;
}
/* We can just copy the arbitrary fields list, because it is
* never even rearranged. Phew! */
pkg->installed.arbs= pkg->available.arbs;
/* Check for disappearing packages:
* We go through all the packages on the system looking for ones
* whose files are entirely part of the one we've just unpacked
* (and which actually *have* some files!).
*
* Any that we find are removed - we run the postrm with ‘disappear’
* as an argument, and remove their info/... files and status info.
* Conffiles are ignored (the new package had better do something
* with them!). */
it = pkg_db_iter_new();
while ((otherpkg = pkg_db_iter_next_pkg(it)) != NULL) {
ensure_package_clientdata(otherpkg);
if (otherpkg == pkg ||
otherpkg->status == stat_notinstalled ||
otherpkg->status == stat_configfiles ||
otherpkg->clientdata->istobe == itb_remove ||
!otherpkg->clientdata->files) continue;
debug(dbg_veryverbose, "process_archive checking disappearance %s",
pkg_name(otherpkg, pnaw_nonambig));
assert(otherpkg->clientdata->istobe == itb_normal ||
otherpkg->clientdata->istobe == itb_deconfigure);
for (cfile= otherpkg->clientdata->files;
cfile && !strcmp(cfile->namenode->name,"/.");
cfile= cfile->next);
if (!cfile) {
debug(dbg_stupidlyverbose, "process_archive no non-root, no disappear");
continue;
}
for (cfile= otherpkg->clientdata->files;
cfile && !filesavespackage(cfile,otherpkg,pkg);
cfile= cfile->next);
if (cfile) continue;
/* So dependency things will give right answers ... */
otherpkg->clientdata->istobe= itb_remove;
debug(dbg_veryverbose, "process_archive disappear checking dependencies");
for (pdep = otherpkg->set->depended.installed;
pdep;
pdep = pdep->rev_next) {
if (pdep->up->type != dep_depends && pdep->up->type != dep_predepends &&
pdep->up->type != dep_recommends) continue;
if (depisok(pdep->up, &depprobwhy, NULL, NULL, false))
continue;
varbuf_end_str(&depprobwhy);
debug(dbg_veryverbose,"process_archive cannot disappear: %s",depprobwhy.buf);
break;
}
if (!pdep) {
/* If we haven't found a reason not to yet, let's look some more. */
for (providecheck= otherpkg->installed.depends;
providecheck;
providecheck= providecheck->next) {
if (providecheck->type != dep_provides) continue;
for (pdep = providecheck->list->ed->depended.installed;
pdep;
pdep = pdep->rev_next) {
if (pdep->up->type != dep_depends && pdep->up->type != dep_predepends &&
pdep->up->type != dep_recommends)
continue;
if (depisok(pdep->up, &depprobwhy, NULL, NULL, false))
continue;
varbuf_end_str(&depprobwhy);
debug(dbg_veryverbose,"process_archive cannot disappear (provides %s): %s",
providecheck->list->ed->name, depprobwhy.buf);
goto break_from_both_loops_at_once;
}
}
break_from_both_loops_at_once:;
}
otherpkg->clientdata->istobe= itb_normal;
if (pdep) continue;
/* No, we're disappearing it. This is the wrong time to go and
* run maintainer scripts and things, as we can't back out. But
* what can we do ? It has to be run this late. */
pkg_disappear(otherpkg, pkg);
} /* while (otherpkg= ... */
pkg_db_iter_free(it);
/* Delete files from any other packages' lists.
* We have to do this before we claim this package is in any
* sane kind of state, as otherwise we might delete by mistake
* a file that we overwrote, when we remove the package which
* had the version we overwrote. To prevent this we make
* sure that we don't claim this package is OK until we
* have claimed ‘ownership’ of all its files. */
for (cfile= newfileslist; cfile; cfile= cfile->next) {
struct filepackages_iterator *iter;
struct pkgset *divpkgset;
if (!(cfile->namenode->flags & fnnf_elide_other_lists)) continue;
if (cfile->namenode->divert && cfile->namenode->divert->useinstead) {
divpkgset = cfile->namenode->divert->pkgset;
if (divpkgset == pkg->set) {
debug(dbg_eachfile,
"process_archive not overwriting any `%s' (overriding, `%s')",
cfile->namenode->name, cfile->namenode->divert->useinstead->name);
continue;
} else {
debug(dbg_eachfile,
"process_archive looking for overwriting `%s' (overridden by %s)",
cfile->namenode->name, divpkgset ? divpkgset->name : "<local>");
}
} else {
divpkgset = NULL;
debug(dbg_eachfile, "process_archive looking for overwriting `%s'",
cfile->namenode->name);
}
iter = filepackages_iter_new(cfile->namenode);
while ((otherpkg = filepackages_iter_next(iter))) {
debug(dbg_eachfiledetail, "process_archive ... found in %s",
pkg_name(otherpkg, pnaw_nonambig));
/* If !fileslistvalid then it's one of the disappeared packages above
* and we don't bother with it here, clearly. */
if (otherpkg == pkg || !otherpkg->clientdata->fileslistvalid)
continue;
if (otherpkg->set == divpkgset) {
debug(dbg_eachfiledetail, "process_archive ... diverted, skipping");
continue;
}
/* Found one. We delete remove the list entry for this file,
* (and any others in the same package) and then mark the package
* as requiring a reread. */
write_filelist_except(otherpkg, &otherpkg->installed,
otherpkg->clientdata->files, fnnf_elide_other_lists);
ensure_package_clientdata(otherpkg);
debug(dbg_veryverbose, "process_archive overwrote from %s",
pkg_name(otherpkg, pnaw_nonambig));
}
filepackages_iter_free(iter);
}
/* Right, the package we've unpacked is now in a reasonable state.
* The only thing that we have left to do with it is remove
* backup files, and we can leave the user to fix that if and when
* it happens (we leave the reinstall required flag, of course). */
pkg_set_status(pkg, stat_unpacked);
modstatdb_note(pkg);
/* Now we delete all the backup files that we made when
* extracting the archive - except for files listed as conffiles
* in the new package.
* This time we count it as an error if something goes wrong.
*
* Note that we don't ever delete things that were in the old
* package as a conffile and don't appear at all in the new.
* They stay recorded as obsolete conffiles and will eventually
* (if not taken over by another package) be forgotten. */
for (cfile= newfileslist; cfile; cfile= cfile->next) {
if (cfile->namenode->flags & fnnf_new_conff) continue;
varbuf_trunc(&fnametmpvb, fnameidlu);
varbuf_add_str(&fnametmpvb,
namenodetouse(cfile->namenode, pkg, &pkg->installed)->name);
varbuf_add_str(&fnametmpvb, DPKGTEMPEXT);
varbuf_end_str(&fnametmpvb);
ensure_pathname_nonexisting(fnametmpvb.buf);
}
/* OK, we're now fully done with the main package.
* This is quite a nice state, so we don't unwind past here. */
pkg_reset_eflags(pkg);
modstatdb_note(pkg);
push_checkpoint(~ehflag_bombout, ehflag_normaltidy);
/* Only the removal of the conflictor left to do.
* The files list for the conflictor is still a little inconsistent in-core,
* as we have not yet updated the filename->packages mappings; however,
* the package->filenames mapping is. */
for (i = 0 ; i < cflict_index ; i++) {
/* We need to have the most up-to-date info about which files are
* what ... */
ensure_allinstfiles_available();
removal_bulk(conflictor[i]);
}
if (cipaction->arg_int == act_install)
add_to_queue(pkg);
}
void archivefiles(const char *const *argv) {
const char *volatile thisarg;
const char *const *volatile argp;
jmp_buf ejbuf;
int pi[2], fc, nfiles, c, i, r;
FILE *pf;
static struct varbuf findoutput;
const char **arglist;
char *p;
trigproc_install_hooks();
modstatdb_init(admindir,
f_noact ? msdbrw_readonly
: cipaction->arg == act_avail ? msdbrw_write
: fc_nonroot ? msdbrw_write
: msdbrw_needsuperuser);
checkpath();
log_message("startup archives %s", cipaction->olong);
if (f_recursive) {
if (!*argv)
badusage(_("--%s --recursive needs at least one path argument"),cipaction->olong);
m_pipe(pi);
fc = subproc_fork();
if (!fc) {
struct command cmd;
const char *const *ap;
m_dup2(pi[1],1); close(pi[0]); close(pi[1]);
command_init(&cmd, FIND, _("find for dpkg --recursive"));
command_add_args(&cmd, FIND, "-L", NULL);
for (ap = argv; *ap; ap++) {
if (strchr(FIND_EXPRSTARTCHARS,(*ap)[0])) {
char *a;
a= m_malloc(strlen(*ap)+10);
strcpy(a,"./");
strcat(a,*ap);
command_add_arg(&cmd, a);
} else {
command_add_arg(&cmd, (const char *)*ap);
}
}
command_add_args(&cmd, "-name", "*.deb", "-type", "f", "-print0", NULL);
command_exec(&cmd);
}
close(pi[1]);
nfiles= 0;
pf= fdopen(pi[0],"r"); if (!pf) ohshite(_("failed to fdopen find's pipe"));
varbufreset(&findoutput);
while ((c= fgetc(pf)) != EOF) {
varbufaddc(&findoutput,c);
if (!c) nfiles++;
}
if (ferror(pf)) ohshite(_("error reading find's pipe"));
if (fclose(pf)) ohshite(_("error closing find's pipe"));
r = subproc_wait_check(fc, "find", PROCNOERR);
if (r != 0)
ohshit(_("find for --recursive returned unhandled error %i"),r);
if (!nfiles)
ohshit(_("searched, but found no packages (files matching *.deb)"));
varbufaddc(&findoutput,0);
varbufaddc(&findoutput,0);
arglist= m_malloc(sizeof(char*)*(nfiles+1));
p= findoutput.buf; i=0;
while (*p) {
arglist[i++]= p;
while (*p++ != '\0') ;
}
arglist[i] = NULL;
argp= arglist;
} else {
if (!*argv) badusage(_("--%s needs at least one package archive file argument"),
cipaction->olong);
argp= argv;
}
currenttime = time(NULL);
/* Initialize fname variables contents. */
varbufreset(&fnamevb);
varbufreset(&fnametmpvb);
varbufreset(&fnamenewvb);
varbufaddstr(&fnamevb,instdir); varbufaddc(&fnamevb,'/');
varbufaddstr(&fnametmpvb,instdir); varbufaddc(&fnametmpvb,'/');
varbufaddstr(&fnamenewvb,instdir); varbufaddc(&fnamenewvb,'/');
fnameidlu= fnamevb.used;
ensure_diversions();
ensure_statoverrides();
while ((thisarg = *argp++) != NULL) {
if (setjmp(ejbuf)) {
pop_error_context(ehflag_bombout);
if (abort_processing)
break;
continue;
}
push_error_context_jump(&ejbuf, print_error_perpackage, thisarg);
process_archive(thisarg);
onerr_abort++;
m_output(stdout, _("<standard output>"));
m_output(stderr, _("<standard error>"));
onerr_abort--;
pop_error_context(ehflag_normaltidy);
}
switch (cipaction->arg) {
case act_install:
case act_configure:
case act_triggers:
case act_remove:
case act_purge:
process_queue();
case act_unpack:
case act_avail:
break;
default:
internerr("unknown action '%d'", cipaction->arg);
}
trigproc_run_deferred();
modstatdb_shutdown();
}
