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-rw-r--r--toys/pending/tar.c30
1 files changed, 19 insertions, 11 deletions
diff --git a/toys/pending/tar.c b/toys/pending/tar.c
index 2cd01ba4..1f71590e 100644
--- a/toys/pending/tar.c
+++ b/toys/pending/tar.c
@@ -18,13 +18,13 @@
* Extract into dir same as filename, --restrict? "Tarball is splodey"
*
-USE_TAR(NEWTOY(tar, "&(full-time)(no-recursion)(numeric-owner)(no-same-permissions)(overwrite)(exclude)*(mtime):(group):(owner):(to-command):o(no-same-owner)p(same-permissions)k(keep-old)c(create)|h(dereference)x(extract)|t(list)|v(verbose)j(bzip2)z(gzip)O(to-stdout)m(touch)X(exclude-from)*T(files-from)*C(directory):f(file):[!txc][!jz]", TOYFLAG_USR|TOYFLAG_BIN))
+USE_TAR(NEWTOY(tar, "&(restrict)(full-time)(no-recursion)(numeric-owner)(no-same-permissions)(overwrite)(exclude)*(mtime):(group):(owner):(to-command):o(no-same-owner)p(same-permissions)k(keep-old)c(create)|h(dereference)x(extract)|t(list)|v(verbose)j(bzip2)z(gzip)O(to-stdout)m(touch)X(exclude-from)*T(files-from)*C(directory):f(file):[!txc][!jz]", TOYFLAG_USR|TOYFLAG_BIN))
config TAR
bool "tar"
default n
help
- usage: tar [-cxtjzhmvO] [-X FILE] [-T FILE] [-f TARFILE] [-C DIR]
+ usage: tar [-cxtfvohmjkO] [-XT FILE] [-f TARFILE] [-C DIR]
Create, extract, or list files in a .tar (or compressed t?z) file.
@@ -35,6 +35,7 @@ config TAR
j bzip2 compression z gzip compression
O Extract to stdout X exclude names in FILE T include names in FILE
--exclude=FILE File pattern(s) to exclude
+ --restrict All archive contents must extract under a single subdirctory.
*/
#define FOR_tar
@@ -357,6 +358,14 @@ static void extract_to_command(void)
}
}
+static void wsettime(char *s, long long sec)
+{
+ struct timespec times[2] = {{sec, 0},{sec, 0}};
+
+ if (utimensat(AT_FDCWD, s, times, AT_SYMLINK_NOFOLLOW))
+ perror_msg("settime %lld %s", sec, s);
+}
+
// Do pending directory utimes(), NULL to flush all.
static int dirflush(char *name)
{
@@ -371,20 +380,22 @@ static int dirflush(char *name)
return 1;
}
+
+ if (FLAG(restrict)) {
+ free(TT.cwd);
+ TT.cwd = strdup(s);
+ toys.optflags ^= FLAG_restrict;
+ }
}
// Set deferred utimes() for directories this file isn't under.
// (Files must be depth-first ordered in tarball for this to matter.)
while (TT.dirs) {
- long long ll = *(long long *)TT.dirs->str;
- struct timeval times[2] = {{ll, 0},{ll, 0}};
// If next file is under (or equal to) this dir, keep waiting
if (name && strstart(&ss, ss = s) && (!*ss || *ss=='/')) break;
- if (utimes(TT.dirs->str+sizeof(long long), times))
- perror_msg("utimes %lld %s", ll,
- TT.dirs->str+sizeof(long long));
+ wsettime(TT.dirs->str+sizeof(long long), *(long long *)TT.dirs->str);
free(llist_pop(&TT.dirs));
}
free(s);
@@ -471,10 +482,7 @@ static void extract_to_disk(void)
strcpy(sl->str+sizeof(long long), name);
sl->next = TT.dirs;
TT.dirs = sl;
- } else {
- struct timeval times[2] = {{TT.hdr.mtime, 0},{TT.hdr.mtime, 0}};
- utimes(TT.hdr.name, times);
- }
+ } else wsettime(TT.hdr.name, TT.hdr.mtime);
}
}