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authorDenis Vlasenko2009-04-21 00:52:21 +0000
committerDenis Vlasenko2009-04-21 00:52:21 +0000
commit8b814b4a349e2262c0ad25793b05206a14651ebb (patch)
treed58a9a4b05e6c662d1ccdcca8da82173d52c1e4b
parent76478b8091d4c3472fb0c7e572c350d150ecd459 (diff)
downloadbusybox-8b814b4a349e2262c0ad25793b05206a14651ebb.zip
busybox-8b814b4a349e2262c0ad25793b05206a14651ebb.tar.gz
tar: support for tar --numeric-owner. By Natanael Copa.
function old new delta tar_longopts 221 237 +16 data_extract_all 692 705 +13 tar_main 690 702 +12
-rw-r--r--archival/libunarchive/data_extract_all.c30
-rw-r--r--archival/tar.c6
-rw-r--r--include/unarchive.h1
3 files changed, 23 insertions, 14 deletions
diff --git a/archival/libunarchive/data_extract_all.c b/archival/libunarchive/data_extract_all.c
index 8b1ee2a..a2dfcb9 100644
--- a/archival/libunarchive/data_extract_all.c
+++ b/archival/libunarchive/data_extract_all.c
@@ -114,22 +114,24 @@ void FAST_FUNC data_extract_all(archive_handle_t *archive_handle)
}
if (!(archive_handle->ah_flags & ARCHIVE_NOPRESERVE_OWN)) {
-#if ENABLE_FEATURE_TAR_UNAME_GNAME
- uid_t uid = file_header->uid;
- gid_t gid = file_header->gid;
+ if (ENABLE_FEATURE_TAR_UNAME_GNAME
+ && !(archive_handle->ah_flags & ARCHIVE_NUMERIC_OWNER)
+ ) {
+ uid_t uid = file_header->uid;
+ gid_t gid = file_header->gid;
- if (file_header->uname) {
- struct passwd *pwd = getpwnam(file_header->uname);
- if (pwd) uid = pwd->pw_uid;
- }
- if (file_header->gname) {
- struct group *grp = getgrnam(file_header->gname);
- if (grp) gid = grp->gr_gid;
+ if (file_header->uname) {
+ struct passwd *pwd = getpwnam(file_header->uname);
+ if (pwd) uid = pwd->pw_uid;
+ }
+ if (file_header->gname) {
+ struct group *grp = getgrnam(file_header->gname);
+ if (grp) gid = grp->gr_gid;
+ }
+ lchown(file_header->name, uid, gid);
+ } else {
+ lchown(file_header->name, file_header->uid, file_header->gid);
}
- lchown(file_header->name, uid, gid);
-#else
- lchown(file_header->name, file_header->uid, file_header->gid);
-#endif
}
if ((file_header->mode & S_IFMT) != S_IFLNK) {
/* uclibc has no lchmod, glibc is even stranger -
diff --git a/archival/tar.c b/archival/tar.c
index eeaf358..03d66a6 100644
--- a/archival/tar.c
+++ b/archival/tar.c
@@ -738,6 +738,7 @@ enum {
USE_FEATURE_SEAMLESS_Z( OPTBIT_COMPRESS ,)
OPTBIT_NOPRESERVE_OWN,
OPTBIT_NOPRESERVE_PERM,
+ OPTBIT_NUMERIC_OWNER,
OPT_TEST = 1 << 0, // t
OPT_EXTRACT = 1 << 1, // x
OPT_BASEDIR = 1 << 2, // C
@@ -756,6 +757,7 @@ enum {
OPT_COMPRESS = USE_FEATURE_SEAMLESS_Z( (1 << OPTBIT_COMPRESS )) + 0, // Z
OPT_NOPRESERVE_OWN = 1 << OPTBIT_NOPRESERVE_OWN , // no-same-owner
OPT_NOPRESERVE_PERM = 1 << OPTBIT_NOPRESERVE_PERM, // no-same-permissions
+ OPT_NUMERIC_OWNER = 1 << OPTBIT_NUMERIC_OWNER,
};
#if ENABLE_FEATURE_TAR_LONG_OPTIONS
static const char tar_longopts[] ALIGN1 =
@@ -787,6 +789,7 @@ static const char tar_longopts[] ALIGN1 =
# if ENABLE_FEATURE_SEAMLESS_Z
"compress\0" No_argument "Z"
# endif
+ "numeric-owner\0" No_argument "\xfc"
"no-same-owner\0" No_argument "\xfd"
"no-same-permissions\0" No_argument "\xfe"
/* --exclude takes next bit position in option mask, */
@@ -873,6 +876,9 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
if (opt & OPT_NOPRESERVE_PERM)
tar_handle->ah_flags |= ARCHIVE_NOPRESERVE_PERM;
+ if (opt & OPT_NUMERIC_OWNER)
+ tar_handle->ah_flags |= ARCHIVE_NUMERIC_OWNER;
+
if (opt & OPT_GZIP)
get_header_ptr = get_header_tar_gz;
diff --git a/include/unarchive.h b/include/unarchive.h
index beb962c..9d4f1fa 100644
--- a/include/unarchive.h
+++ b/include/unarchive.h
@@ -11,6 +11,7 @@ PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
#define ARCHIVE_EXTRACT_NEWER 16
#define ARCHIVE_NOPRESERVE_OWN 32
#define ARCHIVE_NOPRESERVE_PERM 64
+#define ARCHIVE_NUMERIC_OWNER 128
typedef struct file_header_t {
char *name;