int
cpio_strd(void)
{
return(lnk_start());
}
int
cpio_wr(ARCHD *arcn)
{
HD_CPIO *hd;
int nsz;
HD_CPIO hdblk;
/*
* check and repair truncated device and inode fields in the header
*/
if (map_dev(arcn, (u_long)CPIO_MASK, (u_long)CPIO_MASK) < 0)
return(-1);
arcn->pad = 0L;
nsz = arcn->nlen + 1;
hd = &hdblk;
if ((arcn->type != PAX_BLK) && (arcn->type != PAX_CHR))
arcn->sb.st_rdev = 0;
switch(arcn->type) {
case PAX_CTG:
case PAX_REG:
case PAX_HRG:
/*
* set data size for file data
*/
# ifdef NET2_STAT
if (ul_asc((u_long)arcn->sb.st_size, hd->c_filesize,
sizeof(hd->c_filesize), OCT)) {
# else
if (uqd_asc((u_quad_t)arcn->sb.st_size, hd->c_filesize,
sizeof(hd->c_filesize), OCT)) {
# endif
paxwarn(1,"File is too large for cpio format %s",
arcn->org_name);
return(1);
}
break;
case PAX_SLK:
/*
* set data size to hold link name
*/
if (ul_asc((u_long)arcn->ln_nlen, hd->c_filesize,
sizeof(hd->c_filesize), OCT))
goto out;
break;
default:
/*
* all other file types have no file data
*/
if (ul_asc((u_long)0, hd->c_filesize, sizeof(hd->c_filesize),
OCT))
goto out;
break;
}
/*
* copy the values to the header using octal ascii
*/
if (ul_asc((u_long)MAGIC, hd->c_magic, sizeof(hd->c_magic), OCT) ||
ul_asc((u_long)arcn->sb.st_dev, hd->c_dev, sizeof(hd->c_dev),
OCT) ||
ul_asc((u_long)arcn->sb.st_ino, hd->c_ino, sizeof(hd->c_ino),
OCT) ||
ul_asc((u_long)arcn->sb.st_mode, hd->c_mode, sizeof(hd->c_mode),
OCT) ||
ul_asc((u_long)arcn->sb.st_uid, hd->c_uid, sizeof(hd->c_uid),
OCT) ||
ul_asc((u_long)arcn->sb.st_gid, hd->c_gid, sizeof(hd->c_gid),
OCT) ||
ul_asc((u_long)arcn->sb.st_nlink, hd->c_nlink, sizeof(hd->c_nlink),
OCT) ||
ul_asc((u_long)arcn->sb.st_rdev, hd->c_rdev, sizeof(hd->c_rdev),
OCT) ||
ul_asc((u_long)arcn->sb.st_mtime,hd->c_mtime,sizeof(hd->c_mtime),
OCT) ||
ul_asc((u_long)nsz, hd->c_namesize, sizeof(hd->c_namesize), OCT))
goto out;
/*
* write the file name to the archive
*/
if ((wr_rdbuf((char *)&hdblk, (int)sizeof(HD_CPIO)) < 0) ||
(wr_rdbuf(arcn->name, nsz) < 0)) {
paxwarn(1, "Unable to write cpio header for %s", arcn->org_name);
return(-1);
}
/*
* if this file has data, we are done. The caller will write the file
* data, if we are link tell caller we are done, go to next file
*/
if ((arcn->type == PAX_CTG) || (arcn->type == PAX_REG) ||
(arcn->type == PAX_HRG))
return(0);
if (arcn->type != PAX_SLK)
return(1);
/*
* write the link name to the archive, tell the caller to go to the
* next file as we are done.
*/
if (wr_rdbuf(arcn->ln_name, arcn->ln_nlen) < 0) {
paxwarn(1,"Unable to write cpio link name for %s",arcn->org_name);
return(-1);
}
return(1);
out:
/*
* header field is out of range
*/
paxwarn(1, "Cpio header field is too small to store file %s",
arcn->org_name);
return(1);
}
/*
* Routines common to the system VR4 version of cpio (with/without file CRC)
*/
/*
* vcpio_id()
* determine if a block given to us is a valid system VR4 cpio header
* WITHOUT crc. WATCH it the magic cookies are in OCTAL, the header
* uses HEX
* Return:
* 0 if a valid header, -1 otherwise
*/
int
vcpio_id(char *blk, int size)
{
if ((size < (int)sizeof(HD_VCPIO)) ||
(strncmp(blk, AVMAGIC, sizeof(AVMAGIC) - 1) != 0))
return(-1);
return(0);
}
/*
* crc_id()
* determine if a block given to us is a valid system VR4 cpio header
* WITH crc. WATCH it the magic cookies are in OCTAL the header uses HEX
* Return:
* 0 if a valid header, -1 otherwise
*/
int
crc_id(char *blk, int size)
{
if ((size < (int)sizeof(HD_VCPIO)) ||
(strncmp(blk, AVCMAGIC, (int)sizeof(AVCMAGIC) - 1) != 0))
return(-1);
return(0);
}
/*
* crc_strd()
w set file data CRC calculations. Fire up the hard link detection code
* Return:
* 0 if ok -1 otherwise (the return values of lnk_start())
*/
int
crc_strd(void)
{
docrc = 1;
return(lnk_start());
}
int
copy(void)
{
ARCHD *arcn;
int res;
int fddest;
char *dest_pt;
int dlen;
int drem;
int fdsrc = -1;
struct stat sb;
char dirbuf[PAXPATHLEN+1];
arcn = &archd;
/*
* set up the destination dir path and make sure it is a directory. We
* make sure we have a trailing / on the destination
*/
dlen = strlcpy(dirbuf, dirptr, sizeof(dirbuf));
if (dlen >= sizeof(dirbuf) ||
(dlen == sizeof(dirbuf) - 1 && dirbuf[dlen - 1] != '/')) {
tty_warn(1, "directory name is too long %s", dirptr);
return 1;
}
dest_pt = dirbuf + dlen;
if (*(dest_pt-1) != '/') {
*dest_pt++ = '/';
++dlen;
}
*dest_pt = '\0';
drem = PAXPATHLEN - dlen;
if (stat(dirptr, &sb) < 0) {
syswarn(1, errno, "Cannot access destination directory %s",
dirptr);
return 1;
}
if (!S_ISDIR(sb.st_mode)) {
tty_warn(1, "Destination is not a directory %s", dirptr);
return 1;
}
/*
* start up the hard link table; file traversal routines and the
* modification time and access mode database
*/
if ((lnk_start() < 0) || (ftree_start() < 0) || (dir_start() < 0))
return 1;
/*
* When we are doing interactive rename, we store the mapping of names
* so we can fix up hard links files later in the archive.
*/
if (iflag && (name_start() < 0))
return 1;
/*
* set up to cp file trees
*/
cp_start();
/*
* while there are files to archive, process them
*/
while (next_file(arcn) == 0) {
fdsrc = -1;
/*
* check if this file meets user specified options
*/
if (sel_chk(arcn) != 0)
continue;
/*
* if there is already a file in the destination directory with
* the same name and it is newer, skip the one stored on the
* archive.
* NOTE: this test is done BEFORE name modifications as
* specified by pax. this can be confusing to the user who
* might expect the test to be done on an existing file AFTER
* the name mod. In honesty the pax spec is probably flawed in
* this respect
*/
if (uflag || Dflag) {
/*
* create the destination name
*/
if (strlcpy(dest_pt, arcn->name + (*arcn->name == '/'),
drem + 1) > drem) {
tty_warn(1, "Destination pathname too long %s",
arcn->name);
continue;
}
/*
* if existing file is same age or newer skip
*/
res = lstat(dirbuf, &sb);
*dest_pt = '\0';
if (res == 0) {
if (uflag && Dflag) {
if ((arcn->sb.st_mtime<=sb.st_mtime) &&
(arcn->sb.st_ctime<=sb.st_ctime))
continue;
} else if (Dflag) {
if (arcn->sb.st_ctime <= sb.st_ctime)
continue;
} else if (arcn->sb.st_mtime <= sb.st_mtime)
continue;
}
}
/*
* this file is considered selected. See if this is a hard link
* to a previous file; modify the name as requested by the
* user; set the final destination.
*/
ftree_sel(arcn);
if ((chk_lnk(arcn) < 0) || ((res = mod_name(arcn, RENM)) < 0))
break;
if ((res > 0) || (set_dest(arcn, dirbuf, dlen) < 0)) {
/*
* skip file, purge from link table
*/
purg_lnk(arcn);
continue;
}
/*
* Non standard -Y and -Z flag. When the exisiting file is
* same age or newer skip
*/
if ((Yflag || Zflag) && ((lstat(arcn->name, &sb) == 0))) {
if (Yflag && Zflag) {
if ((arcn->sb.st_mtime <= sb.st_mtime) &&
(arcn->sb.st_ctime <= sb.st_ctime))
continue;
} else if (Yflag) {
if (arcn->sb.st_ctime <= sb.st_ctime)
continue;
} else if (arcn->sb.st_mtime <= sb.st_mtime)
continue;
}
if (vflag) {
(void)safe_print(arcn->name, listf);
vfpart = 1;
}
++flcnt;
/*
* try to create a hard link to the src file if requested
* but make sure we are not trying to overwrite ourselves.
*/
if (lflag)
res = cross_lnk(arcn);
else
res = chk_same(arcn);
if (res <= 0) {
if (vflag && vfpart) {
(void)putc('\n', listf);
vfpart = 0;
}
continue;
}
/*
* have to create a new file
*/
if ((arcn->type != PAX_REG) && (arcn->type != PAX_CTG)) {
/*
* create a link or special file
*/
if ((arcn->type == PAX_HLK) ||
(arcn->type == PAX_HRG)) {
int payload;
res = lnk_creat(arcn, &payload);
} else {
res = node_creat(arcn);
}
if (res < 0)
purg_lnk(arcn);
if (vflag && vfpart) {
(void)putc('\n', listf);
vfpart = 0;
}
continue;
}
/*
* have to copy a regular file to the destination directory.
* first open source file and then create the destination file
*/
if ((fdsrc = open(arcn->org_name, O_RDONLY, 0)) < 0) {
syswarn(1, errno, "Unable to open %s to read",
arcn->org_name);
purg_lnk(arcn);
continue;
}
if ((fddest = file_creat(arcn, 0)) < 0) {
rdfile_close(arcn, &fdsrc);
purg_lnk(arcn);
continue;
}
/*
* copy source file data to the destination file
*/
cp_file(arcn, fdsrc, fddest);
file_close(arcn, fddest);
rdfile_close(arcn, &fdsrc);
if (vflag && vfpart) {
(void)putc('\n', listf);
vfpart = 0;
}
}
/*
* restore directory modes and times as required; make sure all
* patterns were selected block off signals to avoid chance for
* multiple entry into the cleanup code.
*/
(void)sigprocmask(SIG_BLOCK, &s_mask, (sigset_t *)NULL);
ar_close();
proc_dir();
ftree_chk();
return 0;
}
int
crc_strd(void)
{
docrc = 1;
return(lnk_start());
}
static int
wr_archive(ARCHD *arcn, int is_app)
{
int res;
int hlk;
int wr_one;
off_t cnt;
int (*wrf)(ARCHD *);
int fd = -1;
time_t now;
/*
* if this format supports hard link storage, start up the database
* that detects them.
*/
if (((hlk = frmt->hlk) == 1) && (lnk_start() < 0))
return 1;
/*
* start up the file traversal code and format specific write
*/
if ((ftree_start() < 0) || ((*frmt->st_wr)() < 0))
return 1;
wrf = frmt->wr;
now = time((time_t *)NULL);
/*
* When we are doing interactive rename, we store the mapping of names
* so we can fix up hard links files later in the archive.
*/
if (iflag && (name_start() < 0))
return 1;
/*
* if this is not append, and there are no files, we do no write a trailer
*/
wr_one = is_app;
/*
* while there are files to archive, process them one at at time
*/
while (next_file(arcn) == 0) {
/*
* check if this file meets user specified options match.
*/
if (sel_chk(arcn) != 0)
continue;
/*
* Here we handle the exclusion -X gnu style patterns which
* are implemented like a pattern list. We don't modify the
* name as this will be done below again, and we don't want
* to double modify it.
*/
if ((res = mod_name(arcn, 0)) < 0)
break;
if (res == 1)
continue;
fd = -1;
if (uflag) {
/*
* only archive if this file is newer than a file with
* the same name that is already stored on the archive
*/
if ((res = chk_ftime(arcn)) < 0)
break;
if (res > 0)
continue;
}
/*
* this file is considered selected now. see if this is a hard
* link to a file already stored
*/
ftree_sel(arcn);
if (hlk && (chk_lnk(arcn) < 0))
break;
if ((arcn->type == PAX_REG) || (arcn->type == PAX_HRG) ||
(arcn->type == PAX_CTG)) {
/*
* we will have to read this file. by opening it now we
* can avoid writing a header to the archive for a file
* we were later unable to read (we also purge it from
* the link table).
*/
if ((fd = open(arcn->org_name, O_RDONLY, 0)) < 0) {
syswarn(1, errno, "Unable to open %s to read",
arcn->org_name);
purg_lnk(arcn);
continue;
}
}
/*
* Now modify the name as requested by the user
*/
if ((res = mod_name(arcn, RENM)) < 0) {
/*
* name modification says to skip this file, close the
* file and purge link table entry
*/
rdfile_close(arcn, &fd);
purg_lnk(arcn);
break;
}
if (arcn->name[0] == '/' && !check_Aflag()) {
memmove(arcn->name, arcn->name + 1, strlen(arcn->name));
}
if ((res > 0) || (docrc && (set_crc(arcn, fd) < 0))) {
/*
* unable to obtain the crc we need, close the file,
* purge link table entry
*/
rdfile_close(arcn, &fd);
purg_lnk(arcn);
continue;
}
if (vflag) {
if (vflag > 1)
ls_list(arcn, now, listf);
else {
(void)safe_print(arcn->name, listf);
vfpart = 1;
}
}
++flcnt;
/*
* looks safe to store the file, have the format specific
* routine write routine store the file header on the archive
*/
if ((res = (*wrf)(arcn)) < 0) {
rdfile_close(arcn, &fd);
break;
}
wr_one = 1;
if (res > 0) {
/*
* format write says no file data needs to be stored
* so we are done messing with this file
*/
if (vflag && vfpart) {
(void)putc('\n', listf);
vfpart = 0;
}
rdfile_close(arcn, &fd);
continue;
}
/*
* Add file data to the archive, quit on write error. if we
* cannot write the entire file contents to the archive we
* must pad the archive to replace the missing file data
* (otherwise during an extract the file header for the file
* which FOLLOWS this one will not be where we expect it to
* be).
*/
res = (*frmt->wr_data)(arcn, fd, &cnt);
rdfile_close(arcn, &fd);
if (vflag && vfpart) {
(void)putc('\n', listf);
vfpart = 0;
}
if (res < 0)
break;
/*
* pad as required, cnt is number of bytes not written
*/
if (((cnt > 0) && (wr_skip(cnt) < 0)) ||
((arcn->pad > 0) && (wr_skip(arcn->pad) < 0)))
break;
}
/*
* tell format to write trailer; pad to block boundary; reset directory
* mode/access times, and check if all patterns supplied by the user
* were matched. block off signals to avoid chance for multiple entry
* into the cleanup code
*/
if (wr_one) {
(*frmt->end_wr)();
wr_fin();
}
(void)sigprocmask(SIG_BLOCK, &s_mask, (sigset_t *)NULL);
ar_close();
if (tflag)
proc_dir();
ftree_chk();
return 0;
}
