int matchpathcon_main(int argc, char **argv)
{
int error = 0;
unsigned opts;
char *fcontext, *prefix, *path;
opt_complementary = "-1" /* at least one param reqd */
":?:f--p:p--f"; /* mutually exclusive */
opts = getopt32(argc, argv, "nNf:p:V", &fcontext, &prefix);
argv += optind;
if (opts & OPT_NOT_TRANS) {
set_matchpathcon_flags(MATCHPATHCON_NOTRANS);
}
if (opts & OPT_FCONTEXT) {
if (matchpathcon_init(fcontext))
bb_perror_msg_and_die("error while processing %s", fcontext);
}
if (opts & OPT_PREFIX) {
if (matchpathcon_init_prefix(NULL, prefix))
bb_perror_msg_and_die("error while processing %s", prefix);
}
while ((path = *argv++) != NULL) {
security_context_t con;
int rc;
if (!(opts & OPT_VERIFY)) {
error += print_matchpathcon(path, opts & OPT_NOT_PRINT);
continue;
}
if (selinux_file_context_verify(path, 0)) {
printf("%s verified\n", path);
continue;
}
if (opts & OPT_NOT_TRANS)
rc = lgetfilecon_raw(path, &con);
else
rc = lgetfilecon(path, &con);
if (rc >= 0) {
printf("%s has context %s, should be ", path, con);
error += print_matchpathcon(path, 1);
freecon(con);
continue;
}
printf("actual context unknown: %s, should be ", strerror(errno));
error += print_matchpathcon(path, 1);
}
matchpathcon_fini();
return error;
}
rpmsx rpmsxNew(const char * fn, unsigned int flags)
{
rpmsx sx = rpmsxGetPool(_rpmsxPool);
sx->fn = NULL;
sx->flags = flags;
#if defined(WITH_SELINUX)
if (fn == NULL)
fn = selinux_file_context_path();
if (sx->flags)
set_matchpathcon_flags(sx->flags);
{ int rc;
sx->fn = rpmGetPath(fn, NULL);
rc = matchpathcon_init(sx->fn);
/* If matchpathcon_init fails, turn off SELinux functionality. */
if (rc < 0)
sx->fn = _free(sx->fn);
}
#endif
return rpmsxLink(sx);
}
int main(int argc, char **argv)
{
int i, init = 0, force_mode = 0;
int header = 1, opt;
int verify = 0;
int notrans = 0;
int error = 0;
int quiet = 0;
if (argc < 2)
usage(argv[0]);
while ((opt = getopt(argc, argv, "m:Nnf:P:p:Vq")) > 0) {
switch (opt) {
case 'n':
header = 0;
break;
case 'm':
force_mode = string_to_mode(optarg);
if (force_mode < 0) {
fprintf(stderr, "%s: mode %s is invalid\n", argv[0], optarg);
exit(1);
}
break;
case 'V':
verify = 1;
break;
case 'N':
notrans = 1;
set_matchpathcon_flags(MATCHPATHCON_NOTRANS);
break;
case 'f':
if (init) {
fprintf(stderr,
"%s: -f and -p are exclusive\n",
argv[0]);
exit(1);
}
init = 1;
if (matchpathcon_init(optarg)) {
fprintf(stderr,
"Error while processing %s: %s\n",
optarg,
errno ? strerror(errno) : "invalid");
exit(1);
}
break;
case 'P':
if (selinux_set_policy_root(optarg) < 0 ) {
fprintf(stderr,
"Error setting policy root %s: %s\n",
optarg,
errno ? strerror(errno) : "invalid");
exit(1);
}
break;
case 'p':
if (init) {
fprintf(stderr,
"%s: -f and -p are exclusive\n",
argv[0]);
exit(1);
}
init = 1;
if (matchpathcon_init_prefix(NULL, optarg)) {
fprintf(stderr,
"Error while processing %s: %s\n",
optarg,
errno ? strerror(errno) : "invalid");
exit(1);
}
break;
case 'q':
quiet = 1;
break;
default:
usage(argv[0]);
}
}
for (i = optind; i < argc; i++) {
int rc, mode = 0;
struct stat buf;
char *path = argv[i];
int len = strlen(path);
if (len > 1 && path[len - 1 ] == '/')
path[len - 1 ] = '\0';
if (lstat(path, &buf) == 0)
mode = buf.st_mode;
if (force_mode)
mode = force_mode;
if (verify) {
rc = selinux_file_context_verify(path, mode);
if (quiet) {
if (rc == 1)
continue;
else
exit(1);
}
if (rc == -1) {
printf("%s error: %s\n", path, strerror(errno));
exit(1);
} else if (rc == 1) {
printf("%s verified.\n", path);
} else {
char * con;
error = 1;
if (notrans)
rc = lgetfilecon_raw(path, &con);
else
rc = lgetfilecon(path, &con);
if (rc >= 0) {
printf("%s has context %s, should be ",
path, con);
printmatchpathcon(path, 0, mode);
freecon(con);
} else {
printf
("actual context unknown: %s, should be ",
strerror(errno));
printmatchpathcon(path, 0, mode);
}
}
} else {
error |= printmatchpathcon(path, header, mode);
}
}
matchpathcon_fini();
return error;
}
int rpmtsRun(rpmts ts, rpmps okProbs, rpmprobFilterFlags ignoreSet)
{
rpm_color_t tscolor = rpmtsColor(ts);
int i;
int rc = 0;
int totalFileCount = 0;
rpmfi fi;
fingerPrintCache fpc;
rpmps ps;
rpmtsi pi; rpmte p;
int numAdded;
int numRemoved;
void * lock = NULL;
int xx;
/* XXX programmer error segfault avoidance. */
if (rpmtsNElements(ts) <= 0)
return -1;
/* If we are in test mode, then there's no need for transaction lock. */
if (!(rpmtsFlags(ts) & RPMTRANS_FLAG_TEST)) {
lock = rpmtsAcquireLock(ts);
if (lock == NULL)
return -1; /* XXX W2DO? */
}
if (rpmtsFlags(ts) & RPMTRANS_FLAG_NOSCRIPTS)
(void) rpmtsSetFlags(ts, (rpmtsFlags(ts) | _noTransScripts | _noTransTriggers));
if (rpmtsFlags(ts) & RPMTRANS_FLAG_NOTRIGGERS)
(void) rpmtsSetFlags(ts, (rpmtsFlags(ts) | _noTransTriggers));
if (rpmtsFlags(ts) & RPMTRANS_FLAG_JUSTDB)
(void) rpmtsSetFlags(ts, (rpmtsFlags(ts) | _noTransScripts | _noTransTriggers));
/* if SELinux isn't enabled or init fails, don't bother... */
if (!rpmtsSELinuxEnabled(ts)) {
rpmtsSetFlags(ts, (rpmtsFlags(ts) | RPMTRANS_FLAG_NOCONTEXTS));
}
if (!(rpmtsFlags(ts) & RPMTRANS_FLAG_NOCONTEXTS)) {
char *fn = rpmGetPath("%{?_install_file_context_path}", NULL);
if (matchpathcon_init(fn) == -1) {
rpmtsSetFlags(ts, (rpmtsFlags(ts) | RPMTRANS_FLAG_NOCONTEXTS));
}
free(fn);
}
ts->probs = rpmpsFree(ts->probs);
ts->probs = rpmpsCreate();
/* XXX Make sure the database is open RDWR for package install/erase. */
{ int dbmode = (rpmtsFlags(ts) & RPMTRANS_FLAG_TEST)
? O_RDONLY : (O_RDWR|O_CREAT);
/* Open database RDWR for installing packages. */
if (rpmtsOpenDB(ts, dbmode)) {
rpmtsFreeLock(lock);
return -1; /* XXX W2DO? */
}
}
ts->ignoreSet = ignoreSet;
{ char * currDir = rpmGetCwd();
rpmtsSetCurrDir(ts, currDir);
currDir = _free(currDir);
}
(void) rpmtsSetChrootDone(ts, 0);
{ rpm_tid_t tid = (rpm_tid_t) time(NULL);
(void) rpmtsSetTid(ts, tid);
}
/* Get available space on mounted file systems. */
xx = rpmtsInitDSI(ts);
/* ===============================================
* For packages being installed:
* - verify package arch/os.
* - verify package epoch:version-release is newer.
* - count files.
* For packages being removed:
* - count files.
*/
rpmlog(RPMLOG_DEBUG, "sanity checking %d elements\n", rpmtsNElements(ts));
ps = rpmtsProblems(ts);
/* The ordering doesn't matter here */
pi = rpmtsiInit(ts);
/* XXX Only added packages need be checked. */
while ((p = rpmtsiNext(pi, TR_ADDED)) != NULL) {
rpmdbMatchIterator mi;
int fc;
if ((fi = rpmteFI(p)) == NULL)
continue; /* XXX can't happen */
fc = rpmfiFC(fi);
if (!(rpmtsFilterFlags(ts) & RPMPROB_FILTER_IGNOREARCH))
if (!archOkay(rpmteA(p)))
rpmpsAppend(ps, RPMPROB_BADARCH,
rpmteNEVRA(p), rpmteKey(p),
rpmteA(p), NULL,
NULL, 0);
if (!(rpmtsFilterFlags(ts) & RPMPROB_FILTER_IGNOREOS))
if (!osOkay(rpmteO(p)))
rpmpsAppend(ps, RPMPROB_BADOS,
rpmteNEVRA(p), rpmteKey(p),
rpmteO(p), NULL,
NULL, 0);
if (!(rpmtsFilterFlags(ts) & RPMPROB_FILTER_OLDPACKAGE)) {
Header h;
mi = rpmtsInitIterator(ts, RPMTAG_NAME, rpmteN(p), 0);
while ((h = rpmdbNextIterator(mi)) != NULL)
xx = ensureOlder(ts, p, h);
mi = rpmdbFreeIterator(mi);
}
if (!(rpmtsFilterFlags(ts) & RPMPROB_FILTER_REPLACEPKG)) {
mi = rpmtsInitIterator(ts, RPMTAG_NAME, rpmteN(p), 0);
xx = rpmdbSetIteratorRE(mi, RPMTAG_EPOCH, RPMMIRE_STRCMP,
rpmteE(p));
xx = rpmdbSetIteratorRE(mi, RPMTAG_VERSION, RPMMIRE_STRCMP,
rpmteV(p));
xx = rpmdbSetIteratorRE(mi, RPMTAG_RELEASE, RPMMIRE_STRCMP,
rpmteR(p));
if (tscolor) {
xx = rpmdbSetIteratorRE(mi, RPMTAG_ARCH, RPMMIRE_STRCMP,
rpmteA(p));
xx = rpmdbSetIteratorRE(mi, RPMTAG_OS, RPMMIRE_STRCMP,
rpmteO(p));
}
while (rpmdbNextIterator(mi) != NULL) {
rpmpsAppend(ps, RPMPROB_PKG_INSTALLED,
rpmteNEVRA(p), rpmteKey(p),
NULL, NULL,
NULL, 0);
break;
}
mi = rpmdbFreeIterator(mi);
}
/* Count no. of files (if any). */
totalFileCount += fc;
}
pi = rpmtsiFree(pi);
ps = rpmpsFree(ps);
/* The ordering doesn't matter here */
pi = rpmtsiInit(ts);
while ((p = rpmtsiNext(pi, TR_REMOVED)) != NULL) {
int fc;
if ((fi = rpmteFI(p)) == NULL)
continue; /* XXX can't happen */
fc = rpmfiFC(fi);
totalFileCount += fc;
}
pi = rpmtsiFree(pi);
/* Run pre-transaction scripts, but only if there are no known
* problems up to this point and not disabled otherwise. */
if (!((rpmtsFlags(ts) & (RPMTRANS_FLAG_BUILD_PROBS|RPMTRANS_FLAG_TEST|RPMTRANS_FLAG_NOPRE))
|| (rpmpsNumProblems(ts->probs) &&
(okProbs == NULL || rpmpsTrim(ts->probs, okProbs))))) {
rpmlog(RPMLOG_DEBUG, "running pre-transaction scripts\n");
runTransScripts(ts, RPMTAG_PRETRANS);
}
/* ===============================================
* Initialize transaction element file info for package:
*/
/*
* FIXME?: we'd be better off assembling one very large file list and
* calling fpLookupList only once. I'm not sure that the speedup is
* worth the trouble though.
*/
rpmlog(RPMLOG_DEBUG, "computing %d file fingerprints\n", totalFileCount);
numAdded = numRemoved = 0;
pi = rpmtsiInit(ts);
while ((p = rpmtsiNext(pi, 0)) != NULL) {
int fc;
if ((fi = rpmteFI(p)) == NULL)
continue; /* XXX can't happen */
fc = rpmfiFC(fi);
switch (rpmteType(p)) {
case TR_ADDED:
numAdded++;
/* Skip netshared paths, not our i18n files, and excluded docs */
if (fc > 0)
skipFiles(ts, p);
break;
case TR_REMOVED:
numRemoved++;
break;
}
}
pi = rpmtsiFree(pi);
if (!rpmtsChrootDone(ts)) {
const char * rootDir = rpmtsRootDir(ts);
xx = chdir("/");
if (rootDir != NULL && strcmp(rootDir, "/") && *rootDir == '/') {
/* opening db before chroot not optimal, see rhbz#103852 c#3 */
xx = rpmdbOpenAll(ts->rdb);
if (chroot(rootDir) == -1) {
rpmlog(RPMLOG_ERR, _("Unable to change root directory: %m\n"));
return -1;
}
}
(void) rpmtsSetChrootDone(ts, 1);
}
ts->ht = rpmFpHashCreate(totalFileCount/2+1, fpHashFunction, fpEqual,
NULL, NULL);
rpmFpHash symlinks = rpmFpHashCreate(totalFileCount/16+16, fpHashFunction, fpEqual, NULL, NULL);
fpc = fpCacheCreate(totalFileCount/2 + 10001);
/* ===============================================
* Add fingerprint for each file not skipped.
*/
pi = rpmtsiInit(ts);
while ((p = rpmtsiNext(pi, 0)) != NULL) {
int fc;
(void) rpmdbCheckSignals();
if ((fi = rpmteFI(p)) == NULL)
continue; /* XXX can't happen */
fc = rpmfiFC(fi);
(void) rpmswEnter(rpmtsOp(ts, RPMTS_OP_FINGERPRINT), 0);
rpmfiFpLookup(fi, fpc);
/* collect symbolic links */
fi = rpmfiInit(fi, 0);
if (fi != NULL) /* XXX lclint */
while ((i = rpmfiNext(fi)) >= 0) {
struct rpmffi_s ffi;
char const *linktarget;
linktarget = rpmfiFLink(fi);
if (!(linktarget && *linktarget != '\0'))
continue;
if (XFA_SKIPPING(rpmfsGetAction(rpmteGetFileStates(p), i)))
continue;
ffi.p = p;
ffi.fileno = i;
rpmFpHashAddEntry(symlinks, rpmfiFpsIndex(fi, i), ffi);
}
(void) rpmswExit(rpmtsOp(ts, RPMTS_OP_FINGERPRINT), fc);
}
pi = rpmtsiFree(pi);
/* ===============================================
* Check fingerprints if they contain symlinks
* and add them to the ts->ht hash table
*/
pi = rpmtsiInit(ts);
while ((p = rpmtsiNext(pi, 0)) != NULL) {
(void) rpmdbCheckSignals();
if ((fi = rpmteFI(p)) == NULL)
continue; /* XXX can't happen */
fi = rpmfiInit(fi, 0);
(void) rpmswEnter(rpmtsOp(ts, RPMTS_OP_FINGERPRINT), 0);
if (fi != NULL) /* XXX lclint */
while ((i = rpmfiNext(fi)) >= 0) {
if (XFA_SKIPPING(rpmfsGetAction(rpmteGetFileStates(p), i)))
continue;
fpLookupSubdir(symlinks, ts->ht, fpc, p, i);
}
(void) rpmswExit(rpmtsOp(ts, RPMTS_OP_FINGERPRINT), 0);
}
pi = rpmtsiFree(pi);
rpmFpHashFree(symlinks);
/* ===============================================
* Compute file disposition for each package in transaction set.
*/
rpmtsNotify(ts, NULL, RPMCALLBACK_TRANS_START, 6, ts->orderCount);
/* check against files in the rpmdb */
checkInstalledFiles(ts, fpc);
pi = rpmtsiInit(ts);
while ((p = rpmtsiNext(pi, 0)) != NULL) {
if ((fi = rpmteFI(p)) == NULL)
continue; /* XXX can't happen */
(void) rpmswEnter(rpmtsOp(ts, RPMTS_OP_FINGERPRINT), 0);
/* check files in ts against each other and update disk space
needs on each partition for this package. */
handleOverlappedFiles(ts, p, fi);
/* Check added package has sufficient space on each partition used. */
if (rpmteType(p) == TR_ADDED) {
rpmtsCheckDSIProblems(ts, p);
}
(void) rpmswExit(rpmtsOp(ts, RPMTS_OP_FINGERPRINT), 0);
}
pi = rpmtsiFree(pi);
if (rpmtsChrootDone(ts)) {
const char * rootDir = rpmtsRootDir(ts);
const char * currDir = rpmtsCurrDir(ts);
if (rootDir != NULL && strcmp(rootDir, "/") && *rootDir == '/')
xx = chroot(".");
(void) rpmtsSetChrootDone(ts, 0);
if (currDir != NULL)
xx = chdir(currDir);
}
rpmtsNotify(ts, NULL, RPMCALLBACK_TRANS_STOP, 6, ts->orderCount);
/* ===============================================
* Free unused memory as soon as possible.
*/
pi = rpmtsiInit(ts);
while ((p = rpmtsiNext(pi, 0)) != NULL) {
rpmteSetFI(p, NULL);
}
pi = rpmtsiFree(pi);
fpc = fpCacheFree(fpc);
ts->ht = rpmFpHashFree(ts->ht);
/* ===============================================
* If unfiltered problems exist, free memory and return.
*/
if ((rpmtsFlags(ts) & RPMTRANS_FLAG_BUILD_PROBS)
|| (rpmpsNumProblems(ts->probs) &&
(okProbs == NULL || rpmpsTrim(ts->probs, okProbs)))
)
{
rpmtsFreeLock(lock);
return ts->orderCount;
}
/* Actually install and remove packages */
rc = rpmtsProcess(ts);
if (!(rpmtsFlags(ts) & (RPMTRANS_FLAG_TEST|RPMTRANS_FLAG_NOPOST))) {
rpmlog(RPMLOG_DEBUG, "running post-transaction scripts\n");
runTransScripts(ts, RPMTAG_POSTTRANS);
}
if (!(rpmtsFlags(ts) & RPMTRANS_FLAG_NOCONTEXTS)) {
matchpathcon_fini();
}
rpmtsFreeLock(lock);
/* FIX: ts->flList may be NULL */
if (rc)
return -1;
else
return 0;
}
int matchpathcon_main(int argc, char **argv)
{
int i;
int header = 1;
int verify = 0;
int notrans = 0;
int error = 0;
unsigned long opts;
char *fcontext, *prefix;
if (argc < 2)
bb_show_usage();
opts = bb_getopt_ulflags(argc, argv, "nNf:p:V", &fcontext, &prefix);
if (opts & BB_GETOPT_ERROR)
bb_show_usage();
if (opts & MATCHPATHCON_OPT_NOT_PRINT)
header = 0;
if (opts & MATCHPATHCON_OPT_NOT_TRANS) {
notrans = 1;
set_matchpathcon_flags(MATCHPATHCON_NOTRANS);
}
if ((opts & MATCHPATHCON_OPT_FCONTEXT) && (opts & MATCHPATHCON_OPT_PREFIX))
bb_error_msg_and_die("-f and -p are exclusive");
if (opts & MATCHPATHCON_OPT_FCONTEXT) {
if (matchpathcon_init(fcontext))
bb_error_msg_and_die("Error while processing %s: %s",
fcontext, errno ? strerror(errno) : "invalid");
}
if (opts & MATCHPATHCON_OPT_PREFIX) {
if (matchpathcon_init_prefix(NULL, prefix))
bb_error_msg_and_die("Error while processing %s: %s",
prefix, errno ? strerror(errno) : "invalid");
}
if (opts & MATCHPATHCON_OPT_VERIFY)
verify = 1;
for (i = optind; i < argc; i++) {
if (verify) {
if (selinux_file_context_verify(argv[i], 0)) {
printf("%s verified.\n", argv[i]);
} else {
security_context_t con;
int rc;
if (notrans)
rc = lgetfilecon_raw(argv[i], &con);
else
rc = lgetfilecon(argv[i], &con);
if (rc >= 0) {
printf("%s has context %s, should be ",
argv[i], con);
error += printmatchpathcon(argv[i], 0);
freecon(con);
} else {
printf
("actual context unknown: %s, should be ",
strerror(errno));
error += printmatchpathcon(argv[i], 0);
}
}
} else {
error += printmatchpathcon(argv[i], header);
}
}
matchpathcon_fini();
return error;
}
void FAST_FUNC data_extract_all(archive_handle_t *archive_handle)
{
file_header_t *file_header = archive_handle->file_header;
int dst_fd;
int res;
#if ENABLE_FEATURE_TAR_SELINUX
char *sctx = archive_handle->tar__sctx[PAX_NEXT_FILE];
#ifdef __BIONIC__
matchpathcon_init(NULL);
#endif
if (!sctx)
sctx = archive_handle->tar__sctx[PAX_GLOBAL];
if (sctx) { /* setfscreatecon is 4 syscalls, avoid if possible */
setfscreatecon(sctx);
free(archive_handle->tar__sctx[PAX_NEXT_FILE]);
archive_handle->tar__sctx[PAX_NEXT_FILE] = NULL;
}
#endif
if (archive_handle->ah_flags & ARCHIVE_CREATE_LEADING_DIRS) {
char *slash = strrchr(file_header->name, '/');
if (slash) {
*slash = '\0';
bb_make_directory(file_header->name, -1, FILEUTILS_RECUR);
*slash = '/';
}
}
if (archive_handle->ah_flags & ARCHIVE_UNLINK_OLD) {
/* Remove the entry if it exists */
if (!S_ISDIR(file_header->mode)) {
/* Is it hardlink?
* We encode hard links as regular files of size 0 with a symlink */
if (S_ISREG(file_header->mode)
&& file_header->link_target
&& file_header->size == 0
) {
/* Ugly special case:
* tar cf t.tar hardlink1 hardlink2 hardlink1
* results in this tarball structure:
* hardlink1
* hardlink2 -> hardlink1
* hardlink1 -> hardlink1 <== !!!
*/
if (strcmp(file_header->link_target, file_header->name) == 0)
goto ret;
}
/* Proceed with deleting */
if (unlink(file_header->name) == -1
&& errno != ENOENT
) {
bb_perror_msg_and_die("can't remove old file %s",
file_header->name);
}
}
}
else if (archive_handle->ah_flags & ARCHIVE_EXTRACT_NEWER) {
/* Remove the existing entry if its older than the extracted entry */
struct stat existing_sb;
if (lstat(file_header->name, &existing_sb) == -1) {
if (errno != ENOENT) {
bb_perror_msg_and_die("can't stat old file");
}
}
else if ((time_t) existing_sb.st_mtime >= (time_t) file_header->mtime) {
if (!(archive_handle->ah_flags & ARCHIVE_EXTRACT_QUIET)
&& !S_ISDIR(file_header->mode)
) {
bb_error_msg("%s not created: newer or "
"same age file exists", file_header->name);
}
data_skip(archive_handle);
goto ret;
}
else if ((unlink(file_header->name) == -1) && (errno != EISDIR)) {
bb_perror_msg_and_die("can't remove old file %s",
file_header->name);
}
}
/* Handle hard links separately
* We encode hard links as regular files of size 0 with a symlink */
if (S_ISREG(file_header->mode)
&& file_header->link_target
&& file_header->size == 0
) {
/* hard link */
res = link(file_header->link_target, file_header->name);
if ((res == -1) && !(archive_handle->ah_flags & ARCHIVE_EXTRACT_QUIET)) {
bb_perror_msg("can't create %slink "
"from %s to %s", "hard",
file_header->name,
file_header->link_target);
}
/* Hardlinks have no separate mode/ownership, skip chown/chmod */
goto ret;
}
/* Create the filesystem entry */
switch (file_header->mode & S_IFMT) {
case S_IFREG: {
/* Regular file */
char *dst_name;
int flags = O_WRONLY | O_CREAT | O_EXCL;
if (archive_handle->ah_flags & ARCHIVE_O_TRUNC)
flags = O_WRONLY | O_CREAT | O_TRUNC;
dst_name = file_header->name;
#ifdef ARCHIVE_REPLACE_VIA_RENAME
if (archive_handle->ah_flags & ARCHIVE_REPLACE_VIA_RENAME)
/* rpm-style temp file name */
dst_name = xasprintf("%s;%x", dst_name, (int)getpid());
#endif
dst_fd = xopen3(dst_name,
flags,
file_header->mode
);
bb_copyfd_exact_size(archive_handle->src_fd, dst_fd, file_header->size);
close(dst_fd);
#ifdef ARCHIVE_REPLACE_VIA_RENAME
if (archive_handle->ah_flags & ARCHIVE_REPLACE_VIA_RENAME) {
xrename(dst_name, file_header->name);
free(dst_name);
}
#endif
break;
}
case S_IFDIR:
res = mkdir(file_header->name, file_header->mode);
if ((res == -1)
&& (errno != EISDIR) /* btw, Linux doesn't return this */
&& (errno != EEXIST)
&& !(archive_handle->ah_flags & ARCHIVE_EXTRACT_QUIET)
) {
bb_perror_msg("can't make dir %s", file_header->name);
}
break;
case S_IFLNK:
/* Symlink */
//TODO: what if file_header->link_target == NULL (say, corrupted tarball?)
res = symlink(file_header->link_target, file_header->name);
if ((res == -1)
&& !(archive_handle->ah_flags & ARCHIVE_EXTRACT_QUIET)
) {
bb_perror_msg("can't create %slink "
"from %s to %s", "sym",
file_header->name,
file_header->link_target);
}
break;
case S_IFSOCK:
case S_IFBLK:
case S_IFCHR:
case S_IFIFO:
res = mknod(file_header->name, file_header->mode, file_header->device);
if ((res == -1)
&& !(archive_handle->ah_flags & ARCHIVE_EXTRACT_QUIET)
) {
bb_perror_msg("can't create node %s", file_header->name);
}
break;
default:
bb_error_msg_and_die("unrecognized file type");
}
if (!S_ISLNK(file_header->mode)) {
if (!(archive_handle->ah_flags & ARCHIVE_DONT_RESTORE_OWNER)) {
uid_t uid = file_header->uid;
gid_t gid = file_header->gid;
#if ENABLE_FEATURE_TAR_UNAME_GNAME
if (!(archive_handle->ah_flags & ARCHIVE_NUMERIC_OWNER)) {
if (file_header->tar__uname) {
//TODO: cache last name/id pair?
struct passwd *pwd = getpwnam(file_header->tar__uname);
if (pwd) uid = pwd->pw_uid;
}
if (file_header->tar__gname) {
struct group *grp = getgrnam(file_header->tar__gname);
if (grp) gid = grp->gr_gid;
}
}
#endif
/* GNU tar 1.15.1 uses chown, not lchown */
chown(file_header->name, uid, gid);
}
/* uclibc has no lchmod, glibc is even stranger -
* it has lchmod which seems to do nothing!
* so we use chmod... */
if (!(archive_handle->ah_flags & ARCHIVE_DONT_RESTORE_PERM)) {
chmod(file_header->name, file_header->mode);
}
if (archive_handle->ah_flags & ARCHIVE_RESTORE_DATE) {
struct timeval t[2];
t[1].tv_sec = t[0].tv_sec = file_header->mtime;
t[1].tv_usec = t[0].tv_usec = 0;
utimes(file_header->name, t);
}
}
ret: ;
#if ENABLE_FEATURE_TAR_SELINUX
if (sctx) {
/* reset the context after creating an entry */
setfscreatecon(NULL);
}
#endif
}
