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data_extract_all: do not chmod symlink. Closes 2053

Browse Source 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2010-06-18 02:00:55 +02:00
parent 0cc25945d8
commit d86b4c3907
2 changed files with 35 additions and 26 deletions
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31
archival/libunarchive/data_extract_all.c
View File

@ -152,35 +152,32 @@ void FAST_FUNC data_extract_all(archive_handle_t *archive_handle)
bb_error_msg_and_die("unrecognized file type");
}
if (!(archive_handle->ah_flags & ARCHIVE_DONT_RESTORE_OWNER)) {
#if ENABLE_FEATURE_TAR_UNAME_GNAME
if (!(archive_handle->ah_flags & ARCHIVE_NUMERIC_OWNER)) {
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 (file_header->tar__uname) {
#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;
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);
} else
#endif
chown(file_header->name, file_header->uid, file_header->gid);
}
if (!S_ISLNK(file_header->mode)) {
}
/* 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);
}
/* same for utime */
if (archive_handle->ah_flags & ARCHIVE_RESTORE_DATE) {
struct timeval t[2];

30
testsuite/cpio.tests
View File

@ -40,8 +40,7 @@ ls -ln cpio.testdir | $FILTER_LS" \
0
-rw-r--r-- 2 $user $group 0 x
-rw-r--r-- 2 $user $group 0 y
" \
"" ""
" "" ""
SKIP=
@ -56,8 +55,7 @@ cpio.testdir/x
cpio.testdir/y
1 blocks
0
" \
"" ""
" "" ""
}
@ -83,11 +81,9 @@ ls -ln cpio.testdir2/cpio.testdir | $FILTER_LS" \
-rw-r--r-- 2 $user $group 2 nonempty
-rw-r--r-- 2 $user $group 2 nonempty1
-rw-r--r-- 1 $user $group 0 solo
" \
"" ""
" "" ""
SKIP=
# Was trying to create "/usr/bin", correct is "usr/bin".
rm -rf cpio.testdir
optional FEATURE_CPIO_P
@ -98,8 +94,24 @@ ls cpio.testdir" \
1 blocks
0
usr
" \
"" ""
" "" ""
SKIP=
# chown on a link was affecting file, dropping its sgid bits
rm -rf cpio.testdir
optional FEATURE_CPIO_O
mkdir cpio.testdir
touch cpio.testdir/file
chmod 6755 cpio.testdir/file # set the suid/sgid bit
ln -sf file cpio.testdir/link
testing "cpio restores sgid bits" \
"cd cpio.testdir && { echo file; echo link; } | cpio -ovHnewc >pack.cpio && rm ???? && cpio -idmvu <pack.cpio 2>/dev/null;
stat -c '%a %n' file" \
"\
file
link
6755 file
" "" ""
SKIP=