The bulk of this commit is adding new tests to ensure the new behavior
works without disrupting old behavior. This is a relatively sane maneuver
when a package adds a conf file (e.g. '/etc/mercurial/hgrc') that was
not previously in the package, but it is placed in the backup array. In
essence, we can treat the existing file as having always been a part of
the package and do our normal compare/install as pacnew logic checks.

Signed-off-by: Dan McGee <dan@archlinux.org>
---

Focus mainly on the one new check block in conflict.c - the rest is a bit of
simplification to the alpm_needbackup() call since we always fetch the package
backup list from a package anyway, as well as adding 3 tests.

lib/libalpm/add.c | 4 ++--
lib/libalpm/backup.c | 7 +++----
lib/libalpm/backup.h | 2 +-
lib/libalpm/conflict.c | 16 ++++++++++++++++
lib/libalpm/remove.c | 2 +-
test/pacman/tests/fileconflict003.py | 2 +-
test/pacman/tests/upgrade027.py | 22 ++++++++++++++++++++++
test/pacman/tests/upgrade028.py | 22 ++++++++++++++++++++++
test/pacman/tests/upgrade029.py | 24 ++++++++++++++++++++++++
9 files changed, 92 insertions(+), 9 deletions(-)
create mode 100644 test/pacman/tests/upgrade027.py
create mode 100644 test/pacman/tests/upgrade028.py
create mode 100644 test/pacman/tests/upgrade029.py

diff --git a/lib/libalpm/add.c b/lib/libalpm/add.c
index e182746..5e1bb8d 100644
--- a/lib/libalpm/add.c
+++ b/lib/libalpm/add.c
@@ -255,7 +255,7 @@ static int extract_single_file(alpm_handle_t *handle, struct archive *archive,
alpm_backup_t *backup;
/* go to the backup array and see if our conflict is there */
/* check newpkg first, so that adding backup files is retroactive */
- backup = _alpm_needbackup(entryname, alpm_pkg_get_backup(newpkg));
+ backup = _alpm_needbackup(entryname, newpkg);
if(backup) {
/* if we force hash_orig to be non-NULL retroactive backup works */
hash_orig = "";
@@ -264,7 +264,7 @@ static int extract_single_file(alpm_handle_t *handle, struct archive *archive,

/* check oldpkg for a backup entry, store the hash if available */
if(oldpkg) {
- backup = _alpm_needbackup(entryname, alpm_pkg_get_backup(oldpkg));
+ backup = _alpm_needbackup(entryname, oldpkg);
if(backup) {
hash_orig = backup->hash;
needbackup = 1;
diff --git a/lib/libalpm/backup.c b/lib/libalpm/backup.c
index becc7be..728c1d0 100644
--- a/lib/libalpm/backup.c
+++ b/lib/libalpm/backup.c
@@ -58,16 +58,15 @@ int _alpm_split_backup(const char *string, alpm_backup_t **backup)
/* Look for a filename in a alpm_pkg_t.backup list. If we find it,
* then we return the full backup entry.
*/
-alpm_backup_t *_alpm_needbackup(const char *file, const alpm_list_t *backup_list)
+alpm_backup_t *_alpm_needbackup(const char *file, alpm_pkg_t *pkg)
{
const alpm_list_t *lp;

- if(file == NULL || backup_list == NULL) {
+ if(file == NULL || pkg == NULL) {
return NULL;
}

- /* run through the backup list and parse out the hash for our file */
- for(lp = backup_list; lp; lp = lp->next) {
+ for(lp = alpm_pkg_get_backup(pkg); lp; lp = lp->next) {
alpm_backup_t *backup = lp->data;

if(strcmp(file, backup->name) == 0) {
diff --git a/lib/libalpm/backup.h b/lib/libalpm/backup.h
index 39c01a6..0b84a68 100644
--- a/lib/libalpm/backup.h
+++ b/lib/libalpm/backup.h
@@ -24,7 +24,7 @@
#include "alpm.h"

int _alpm_split_backup(const char *string, alpm_backup_t **backup);
-alpm_backup_t *_alpm_needbackup(const char *file, const alpm_list_t *backup_list);
+alpm_backup_t *_alpm_needbackup(const char *file, alpm_pkg_t *pkg);
void _alpm_backup_free(alpm_backup_t *backup);
alpm_backup_t *_alpm_backup_dup(const alpm_backup_t *backup);

diff --git a/lib/libalpm/conflict.c b/lib/libalpm/conflict.c
index 8cf1619..eda6ba1 100644
--- a/lib/libalpm/conflict.c
+++ b/lib/libalpm/conflict.c
@@ -549,6 +549,22 @@ alpm_list_t *_alpm_db_find_fileconflicts(alpm_handle_t *handle,
free(rpath);
}

+ /* is the file unowned and in the backup list of the new package? */
+ if(!resolved_conflict && _alpm_needbackup(filestr, p1)) {
+ alpm_list_t *local_pkgs = _alpm_db_get_pkgcache(handle->db_local);
+ int found = 0;
+ for(k = local_pkgs; k && !found; k = k->next) {
+ if(_alpm_filelist_contains(alpm_pkg_get_files(k->data), filestr)) {
+ found = 1;
+ }
+ }
+ if(!found) {
+ _alpm_log(handle, ALPM_LOG_DEBUG,
+ "file was unowned but in new backup list: %s
", path);
+ resolved_conflict = 1;
+ }
+ }
+
if(!resolved_conflict) {
conflicts = add_fileconflict(handle, conflicts,
ALPM_FILECONFLICT_FILESYSTEM, path, p1->name, NULL);
diff --git a/lib/libalpm/remove.c b/lib/libalpm/remove.c
index 5d2256d..b15dbaa 100644
--- a/lib/libalpm/remove.c
+++ b/lib/libalpm/remove.c
@@ -255,7 +255,7 @@ static void unlink_file(alpm_handle_t *handle, alpm_pkg_t *info,
}
} else {
/* if the file needs backup and has been modified, back it up to .pacsave */
- alpm_backup_t *backup = _alpm_needbackup(fileobj->name, alpm_pkg_get_backup(info));
+ alpm_backup_t *backup = _alpm_needbackup(fileobj->name, info);
if(backup) {
if(nosave) {
_alpm_log(handle, ALPM_LOG_DEBUG, "transaction is set to NOSAVE, not backing up '%s'
", file);
diff --git a/test/pacman/tests/fileconflict003.py b/test/pacman/tests/fileconflict003.py
index 89696fc..749e5a9 100644
--- a/test/pacman/tests/fileconflict003.py
+++ b/test/pacman/tests/fileconflict003.py
@@ -1,4 +1,4 @@
-self.description = "FS#8156"
+self.description = "FS#8156- conflict between directory and incoming symlink"

p1 = pmpkg("pkg1")
p1.files = ["test/",
diff --git a/test/pacman/tests/upgrade027.py b/test/pacman/tests/upgrade027.py
new file mode 100644
index 0000000..99087f3
--- /dev/null
+++ b/test/pacman/tests/upgrade027.py
@@ -0,0 +1,22 @@
+self.description = "Upgrade a package, with a file entering the pkg in 'backup' (changed)"
+
+self.filesystem = ["etc/dummy.conf"]
+
+lp = pmpkg("dummy")
+lp.files = ["usr/bin/dummy"]
+self.addpkg2db("local", lp)
+
+p = pmpkg("dummy", "1.0-2")
+p.files = ["usr/bin/dummy",
+ "etc/dummy.conf*"]
+p.backup = ["etc/dummy.conf"]
+self.addpkg(p)
+
+self.args = "-U %s" % p.filename()
+
+self.addrule("PACMAN_RETCODE=0")
+self.addrule("PKG_VERSION=dummy|1.0-2")
+self.addrule("FILE_PACNEW=etc/dummy.conf")
+self.addrule("!FILE_PACSAVE=etc/dummy.conf")
+self.addrule("!FILE_PACORIG=etc/dummy.conf")
+self.addrule("FILE_EXIST=etc/dummy.conf")
diff --git a/test/pacman/tests/upgrade028.py b/test/pacman/tests/upgrade028.py
new file mode 100644
index 0000000..18a10f5
--- /dev/null
+++ b/test/pacman/tests/upgrade028.py
@@ -0,0 +1,22 @@
+self.description = "Upgrade a package, with a file entering the pkg in 'backup' (unchanged)"
+
+self.filesystem = ["etc/dummy.conf"]
+
+lp = pmpkg("dummy")
+lp.files = ["usr/bin/dummy"]
+self.addpkg2db("local", lp)
+
+p = pmpkg("dummy", "1.0-2")
+p.files = ["usr/bin/dummy",
+ "etc/dummy.conf"]
+p.backup = ["etc/dummy.conf"]
+self.addpkg(p)
+
+self.args = "-U %s" % p.filename()
+
+self.addrule("PACMAN_RETCODE=0")
+self.addrule("PKG_VERSION=dummy|1.0-2")
+self.addrule("!FILE_PACNEW=etc/dummy.conf")
+self.addrule("!FILE_PACSAVE=etc/dummy.conf")
+self.addrule("!FILE_PACORIG=etc/dummy.conf")
+self.addrule("FILE_EXIST=etc/dummy.conf")
diff --git a/test/pacman/tests/upgrade029.py b/test/pacman/tests/upgrade029.py
new file mode 100644
index 0000000..c308f42
--- /dev/null
+++ b/test/pacman/tests/upgrade029.py
@@ -0,0 +1,24 @@
+self.description = "Upgrade a package, with an owned file entering the pkg in 'backup'"
+
+lp = pmpkg("dummy")
+lp.files = ["usr/bin/dummy"]
+self.addpkg2db("local", lp)
+
+lp2 = pmpkg("dummy2")
+lp2.files = ["etc/dummy.conf"]
+self.addpkg2db("local", lp2)
+
+p = pmpkg("dummy", "1.0-2")
+p.files = ["usr/bin/dummy",
+ "etc/dummy.conf*"]
+p.backup = ["etc/dummy.conf"]
+self.addpkg(p)
+
+self.args = "-U %s" % p.filename()
+
+self.addrule("PACMAN_RETCODE=1")
+self.addrule("PKG_VERSION=dummy|1.0-1")
+self.addrule("!FILE_PACNEW=etc/dummy.conf")
+self.addrule("!FILE_PACSAVE=etc/dummy.conf")
+self.addrule("!FILE_PACORIG=etc/dummy.conf")
+self.addrule("FILE_EXIST=etc/dummy.conf")
--
1.7.6