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conflict.c : fix for FS#8156, detect conflict between symlink and dir.

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The previous fileconflict check (package vs filesystem) skipped the conflict
when the file on the filesystem was a directory or a symlink to a directory,
no matter what the file in the package was.
Now, the conflict will only be skipped if the file in the package is a
directory (so compatible with a dir or a dir symlink on the filesystem).

So in the case of 8156 (new fileconflict003 pactest for this case), instead
of silently ignoring the extraction of the test symlink, pacman will now
fail because of a file conflict between the test symlink in the pkg2 package
and the test directory on the filesystem.

Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
This commit is contained in:
Chantry Xavier 2008-01-06 10:59:41 +01:00
parent a27d7f6071
commit a71f4c4c6a
2 changed files with 30 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
lib/libalpm/conflict.c
View File

@ -386,6 +386,7 @@ alpm_list_t *_alpm_db_find_fileconflicts(pmdb_t *db, pmtrans_t *trans, char *roo
/* loop over each file to be installed */
for(j = tmpfiles; j; j = j->next) {
int skip_conflict = 0;
filestr = j->data;
snprintf(path, PATH_MAX, "%s%s", root, filestr);
@ -396,11 +397,17 @@ alpm_list_t *_alpm_db_find_fileconflicts(pmdb_t *db, pmtrans_t *trans, char *roo
}
stat(path, &sbuf);
if(S_ISDIR(lsbuf.st_mode)) {
_alpm_log(PM_LOG_DEBUG, "%s is a directory, not a conflict\n", path);
} else if(S_ISLNK(lsbuf.st_mode) && S_ISDIR(sbuf.st_mode)) {
_alpm_log(PM_LOG_DEBUG, "%s is a symlink to a dir, hopefully not a conflict\n", path);
} else {
if(path[strlen(path)-1] == '/') {
if(S_ISDIR(lsbuf.st_mode)) {
_alpm_log(PM_LOG_DEBUG, "%s is a directory, not a conflict\n", path);
skip_conflict = 1;
} else if(S_ISLNK(lsbuf.st_mode) && S_ISDIR(sbuf.st_mode)) {
_alpm_log(PM_LOG_DEBUG,
"%s is a symlink to a dir, hopefully not a conflict\n", path);
skip_conflict = 1;
}
}
if(!skip_conflict) {
_alpm_log(PM_LOG_DEBUG, "checking possible conflict: %s\n", path);
/* Make sure the possible conflict is not a symlink that points to a

18
pactest/tests/fileconflict003.py Normal file
View File

@ -0,0 +1,18 @@
self.description = "FS#8156"
p1 = pmpkg("pkg1")
p1.files = ["test/",
"test/file"]
self.addpkg2db("local", p1)
p2 = pmpkg("pkg2")
p2.files = ["test2/",
"test2/file2",
"test -> test2"]
self.addpkg2db("sync", p2)
self.args = "-S pkg2"
self.addrule("PACMAN_RETCODE=1")
self.addrule("PKG_EXIST=pkg1")
self.addrule("!PKG_EXIST=pkg2")