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| author | Harald van Dijk | 2018-05-22 17:34:31 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2018-05-22 17:34:31 +0200 |
| commit | 8c24af9dcfe0d89a660c39838eec4d20bc13efbf (patch) | |
| tree | 1be6f930fb21383ba8c46a6d0491cafe3e26d687 /archival/libarchive/unsafe_symlink_target.c | |
| parent | a40a661d971cf75c617c83357ac0e87a45f41f4f (diff) | |
| download | busybox-8c24af9dcfe0d89a660c39838eec4d20bc13efbf.zip busybox-8c24af9dcfe0d89a660c39838eec4d20bc13efbf.tar.gz | |
tar: fix interaction of delayed symlink and hardlink creation
function old new delta
create_or_remember_link - 106 +106
create_links_from_list - 93 +93
find_applet_by_name 124 128 +4
unzip_main 2724 2726 +2
data_extract_all 891 873 -18
create_symlinks_from_list 64 - -64
create_or_remember_symlink 94 - -94
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 2/1 up/down: 205/-176) Total: 29 bytes
Signed-off-by: Harald van Dijk <harald@gigawatt.nl>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'archival/libarchive/unsafe_symlink_target.c')
| -rw-r--r-- | archival/libarchive/unsafe_symlink_target.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/archival/libarchive/unsafe_symlink_target.c b/archival/libarchive/unsafe_symlink_target.c index 8dcafea..f8dc803 100644 --- a/archival/libarchive/unsafe_symlink_target.c +++ b/archival/libarchive/unsafe_symlink_target.c @@ -5,13 +5,14 @@ #include "libbb.h" #include "bb_archive.h" -void FAST_FUNC create_or_remember_symlink(llist_t **symlink_placeholders, +void FAST_FUNC create_or_remember_link(llist_t **link_placeholders, const char *target, - const char *linkname) + const char *linkname, + int hard_link) { - if (target[0] == '/' || strstr(target, "..")) { - llist_add_to(symlink_placeholders, - xasprintf("%s%c%s", linkname, '\0', target) + if (hard_link || target[0] == '/' || strstr(target, "..")) { + llist_add_to_end(link_placeholders, + xasprintf("%c%s%c%s", hard_link, linkname, '\0', target) ); return; } @@ -23,17 +24,17 @@ void FAST_FUNC create_or_remember_symlink(llist_t **symlink_placeholders, } } -void FAST_FUNC create_symlinks_from_list(llist_t *list) +void FAST_FUNC create_links_from_list(llist_t *list) { while (list) { char *target; - target = list->data + strlen(list->data) + 1; - if (symlink(target, list->data)) { + target = list->data + 1 + strlen(list->data + 1) + 1; + if ((*list->data ? link : symlink) (target, list->data + 1)) { /* shared message */ bb_error_msg_and_die("can't create %slink '%s' to '%s'", - "sym", - list->data, target + *list->data ? "hard" : "sym", + list->data + 1, target ); } list = list->link; |