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authorDan McGee <dan@archlinux.org>2011-06-27 09:07:06 -0500
committerDan McGee <dan@archlinux.org>2011-06-27 09:15:31 -0500
commite378170c2555b656ef87715d8284d038037ced5f (patch)
treeec6987dcd3f351903881bedee0a3bd846aa7fbe4 /lib
parentf8f4c2a6f301ab423f3ca702ebc24854cc701683 (diff)
Ensure a file can be replaced by a directory
This addresses FS#24904. In a normal upgrade case, this replacement seems to work just fine. However, when doing a sync "replace" type upgrade, we weren't properly handling this edge case due to path comparison not ignoring trailing slashes. Fix this by pruning any trailing slashes past a certain point of file conflict resolution where we no longer need them, which allows us to safely detect cases such as now tested in the new pactest. Signed-off-by: Dan McGee <dan@archlinux.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/libalpm/conflict.c26
1 files changed, 18 insertions, 8 deletions
diff --git a/lib/libalpm/conflict.c b/lib/libalpm/conflict.c
index b1df1086..db10d329 100644
--- a/lib/libalpm/conflict.c
+++ b/lib/libalpm/conflict.c
@@ -433,7 +433,6 @@ alpm_list_t *_alpm_db_find_fileconflicts(pmdb_t *db, pmtrans_t *trans,
/* declarations for second check */
struct stat lsbuf, sbuf;
- char *filestr = NULL;
/* CHECK 2: check every target against the filesystem */
_alpm_log(PM_LOG_DEBUG, "searching for filesystem conflicts: %s\n", p1->name);
@@ -452,7 +451,9 @@ alpm_list_t *_alpm_db_find_fileconflicts(pmdb_t *db, pmtrans_t *trans,
}
for(j = tmpfiles; j; j = j->next) {
- filestr = j->data;
+ const char *filestr = j->data, *relative_path;
+ /* have we acted on this conflict? */
+ int resolved_conflict = 0;
snprintf(path, PATH_MAX, "%s%s", handle->root, filestr);
@@ -471,16 +472,22 @@ alpm_list_t *_alpm_db_find_fileconflicts(pmdb_t *db, pmtrans_t *trans,
"%s is a symlink to a dir, hopefully not a conflict\n", path);
continue;
}
+ /* if we made it to here, we want all subsequent path comparisons to
+ * not include the trailing slash. This allows things like file ->
+ * directory replacements. */
+ path[strlen(path) - 1] = '\0';
}
- _alpm_log(PM_LOG_DEBUG, "checking possible conflict: %s\n", path);
- int resolved_conflict = 0; /* have we acted on this conflict? */
+ _alpm_log(PM_LOG_DEBUG, "checking possible conflict: %s\n", path);
+ relative_path = path + strlen(handle->root);
/* Check remove list (will we remove the conflicting local file?) */
for(k = remove; k && !resolved_conflict; k = k->next) {
pmpkg_t *rempkg = k->data;
- if(rempkg && alpm_list_find_str(alpm_pkg_get_files(rempkg), filestr)) {
- _alpm_log(PM_LOG_DEBUG, "local file will be removed, not a conflict: %s\n", filestr);
+ if(alpm_list_find_str(alpm_pkg_get_files(rempkg), relative_path)) {
+ _alpm_log(PM_LOG_DEBUG,
+ "local file will be removed, not a conflict: %s\n",
+ relative_path);
resolved_conflict = 1;
}
}
@@ -498,8 +505,11 @@ alpm_list_t *_alpm_db_find_fileconflicts(pmdb_t *db, pmtrans_t *trans,
/* skip removal of file, but not add. this will prevent a second
* package from removing the file when it was already installed
* by its new owner (whether the file is in backup array or not */
- trans->skip_remove = alpm_list_add(trans->skip_remove, strdup(filestr));
- _alpm_log(PM_LOG_DEBUG, "file changed packages, adding to remove skiplist: %s\n", filestr);
+ trans->skip_remove = alpm_list_add(trans->skip_remove,
+ strdup(filestr));
+ _alpm_log(PM_LOG_DEBUG,
+ "file changed packages, adding to remove skiplist: %s\n",
+ filestr);
resolved_conflict = 1;
}
}