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unpack: get rid of code that checks for modified symlinks.

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Unpacking those symlinks is so cheap that there's no point in wasting
resources just to check if those have been modified, just unpack them
unconditionally.
This commit is contained in:
Juan RP 2014-10-25 06:52:12 +02:00
parent 5fe3594cb5
commit e75beec76f
1 changed files with 2 additions and 61 deletions
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63
lib/package_unpack.c
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@ -48,28 +48,6 @@ set_extract_flags(uid_t euid)
return flags;
}
static const char *
find_pkg_symlink_target(xbps_dictionary_t d, const char *file)
{
xbps_array_t links;
xbps_object_t obj;
const char *pkgfile, *tgt = NULL;
char *rfile;
links = xbps_dictionary_get(d, "links");
for (unsigned int i = 0; i < xbps_array_count(links); i++) {
rfile = strchr(file, '.') + 1;
obj = xbps_array_get(links, i);
xbps_dictionary_get_cstring_nocopy(obj, "file", &pkgfile);
if (strcmp(rfile, pkgfile) == 0) {
xbps_dictionary_get_cstring_nocopy(obj, "target", &tgt);
break;
}
}
return tgt;
}
static bool
match_preserved_file(struct xbps_handle *xhp, const char *entry)
{
@ -106,8 +84,8 @@ unpack_archive(struct xbps_handle *xhp,
struct archive_entry *entry;
size_t instbufsiz = 0, rembufsiz = 0;
ssize_t entry_size;
const char *file, *entry_pname, *transact, *tgtlnk;
char *pkgname, *dname, *buf, *buf2, *p, *p2;
const char *file, *entry_pname, *transact;
char *pkgname, *buf;
int ar_rv, rv, entry_type, flags;
bool preserve, update, file_exists, skip_obsoletes;
bool skip_extract, force, xucd_stats;
@ -367,43 +345,6 @@ unpack_archive(struct xbps_handle *xhp,
rv = 0;
}
}
} else if (!force && (entry_type == AE_IFLNK)) {
/*
* Check if current link from binpkg hasn't been
* modified, otherwise extract new link.
*/
buf = realpath(entry_pname, NULL);
if (buf) {
if (strcmp(xhp->rootdir, "/")) {
p = buf;
p += strlen(xhp->rootdir);
} else
p = buf;
tgtlnk = find_pkg_symlink_target(binpkg_filesd,
entry_pname);
assert(tgtlnk);
if (strncmp(tgtlnk, "./", 2) == 0) {
buf2 = strdup(entry_pname);
assert(buf2);
dname = dirname(buf2);
p2 = xbps_xasprintf("%s/%s", dname, tgtlnk);
free(buf2);
} else {
p2 = strdup(tgtlnk);
assert(p2);
}
xbps_dbg_printf(xhp, "%s: symlink %s cur: %s "
"new: %s\n", pkgver, entry_pname, p, p2);
if (strcmp(p, p2) == 0) {
xbps_dbg_printf(xhp, "%s: symlink "
"%s matched, skipping...\n",
pkgver, entry_pname);
skip_extract = true;
}
free(buf);
free(p2);
}
}
/*
* Check if current uid/gid differs from file in binpkg,