emo/busybox
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

tar: fix bug 673 (misdetection of repeated dir as hardlink). +92 bytes

Browse Source 
While at it, remove many superfluous ops on unpack:
mkdir("."), lots of umask() calls. Can remove more
by caching username->uid.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2009-11-29 07:45:33 +01:00
parent 2ce42e98d7
commit f94c9bf288
3 changed files with 129 additions and 77 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
archival/libunarchive/data_extract_all.c
View File

@@ -13,9 +13,12 @@ void FAST_FUNC data_extract_all(archive_handle_t *archive_handle)
int res;
if (archive_handle->ah_flags & ARCHIVE_CREATE_LEADING_DIRS) {
char *name = xstrdup(file_header->name);
bb_make_directory(dirname(name), -1, FILEUTILS_RECUR);
free(name);
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) {
@@ -52,8 +55,9 @@ void FAST_FUNC data_extract_all(archive_handle_t *archive_handle)
/* Handle hard links separately
* We identified 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)
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);
@@ -121,6 +125,7 @@ void FAST_FUNC data_extract_all(archive_handle_t *archive_handle)
gid_t gid = file_header->gid;
if (file_header->uname) {
//TODO: cache last name/id pair?
struct passwd *pwd = getpwnam(file_header->uname);
if (pwd) uid = pwd->pw_uid;
}
@@ -128,7 +133,7 @@ void FAST_FUNC data_extract_all(archive_handle_t *archive_handle)
struct group *grp = getgrnam(file_header->gname);
if (grp) gid = grp->gr_gid;
}
/* GNU tar 1.15.1 use chown, not lchown */
/* GNU tar 1.15.1 uses chown, not lchown */
chown(file_header->name, uid, gid);
} else
#endif