[pacman-dev] [patch] _alpm_remove_commit refactoring
Dan McGee
dpmcgee at gmail.com
Mon Jan 15 22:04:13 EST 2007
On 1/15/07, James Rosten <seinfeld90 at gmail.com> wrote:
> This is my refactoring of _alpm_remove_commit in remove.c.
Hey, I touched up your patch a bit. First, I made your new function
static because it is not needed outside remove.c. This allows the
compiler to possibly optimize better, and keeps the code sane. You'll
also notice that the function is no longer listed in the header file
because of this.
You also made a few small typo errors, but the effort was there :).
May want to try compiling next time.
> For example the creation of
> char *md5 and *sha1 which were both _alpm_needbackup(file, info->backup), so I
> just made one char *md5_sha1 that is _alpm_needbackup(file, info->backup)
I renamed this variable to checksum for clarity, but otherwise good point.
> I also noticed that within the first for statement
> char pm_install[PATH_MAX] was declared, then later in that for statement it was
> declared again in an if statement, so I changed the second pm_install to
> pm_install2 (can't believe that got my the compiler).
It got past the compiler because local variable names can shield those
higher up. It was an unnecessary second declaration AFAIK, so I simply
removed the second declare.
Signed-off-by: James Rosten <seinfeld90 at gmail.com>
Signed-off-by: Dan McGee <dpmcgee at gmail.com>
--- pacman-lib.orig/lib/libalpm/remove.c 2007-01-03 01:13:08.000000000 -0500
+++ pacman-lib.remove_refactor/lib/libalpm/remove.c 2007-01-15
21:55:04.000000000 -0500
@@ -37,7 +37,6 @@
#include <fcntl.h>
#include <string.h>
#include <limits.h>
-#include <zlib.h>
#include <libintl.h>
/* pacman */
#include "list.h"
@@ -58,6 +57,9 @@
#include "handle.h"
#include "alpm.h"
+/* static function declarations */
+static void unlink_file(pmpkg_t *info, pmlist_t *lp, pmlist_t *targ,
pmtrans_t *trans, int filenum, int *position);
+
int _alpm_remove_loadtarget(pmtrans_t *trans, pmdb_t *db, char *name)
{
pmpkg_t *info;
@@ -156,12 +158,86 @@
return(strcmp(s1, s2));
}
+/* Helper function for iterating through
+ * a package's file and deleting them
+ * Used by _alpm_remove_commit
+*/
+static void unlink_file(pmpkg_t *info, pmlist_t *lp, pmlist_t *targ,
pmtrans_t *trans, int filenum, int *position)
+{
+ struct stat buf;
+ int nb = 0;
+ double percent = 0.0;
+ char *file = lp->data;
+ char line[PATH_MAX+1];
+ char *checksum = _alpm_needbackup(file, info->backup);
+
+ if ( *position != 0 ) {
+ percent = (double)*position / filenum;
+ } if ( checksum ) {
+ nb = 1;
+ FREE(checksum);
+ } if ( !nb && trans->type == PM_TRANS_TYPE_UPGRADE ) {
+ /* check noupgrade */
+ if ( _alpm_list_is_strin(file, handle->noupgrade) ) {
+ nb = 1;
+ }
+ }
+ snprintf(line, PATH_MAX, "%s%s", handle->root, file);
+ if ( lstat(line, &buf) ) {
+ _alpm_log(PM_LOG_DEBUG, _("file %s does not exist"), file);
+ return;
+ }
+ if ( S_ISDIR(buf.st_mode) ) {
+ if ( rmdir(line) ) {
+ /* this is okay, other pakcages are probably using it (like /usr) */
+ _alpm_log(PM_LOG_DEBUG, _("keeping directory %s"), file);
+ } else {
+ _alpm_log(PM_LOG_DEBUG, _("removing directory %s"), file);
+ }
+ } else {
+ /* check the "skip list" before removing the file.
+ * see the big comment block in db_find_conflicts() for an
+ * explanation. */
+ int skipit = 0;
+ pmlist_t *j;
+ for ( j = trans->skiplist; j; j = j->next ) {
+ if ( !strcmp(file, (char*)j->data) ) {
+ skipit = 1;
+ }
+ }
+ if ( skipit ) {
+ _alpm_log(PM_LOG_FLOW2, _("skipping removal of %s as it has moved
to another package"),
+ file);
+ } else {
+ /* if the file is flagged, back it up to .pacsave */
+ if ( nb ) {
+ if ( !(trans->type == PM_TRANS_TYPE_UPGRADE) ) {
+ /* if it was an upgrade, the file would be left alone because
+ * pacman_add() would handle it */
+ if ( !(trans->type & PM_TRANS_FLAG_NOSAVE) ) {
+ char newpath[PATH_MAX];
+ snprintf(newpath, PATH_MAX, "%s.pacsave", line);
+ rename(line, newpath);
+ _alpm_log(PM_LOG_WARNING, _("%s saved as %s"), file);
+ }
+ }
+ } else {
+ _alpm_log(PM_LOG_FLOW2, _("unlinking %s"), file);
+ int list_count = _alpm_list_count(trans->packages); /* this way
we don't have to call _alpm_list_count twice during PROGRESS */
+ PROGRESS(trans, PM_TRANS_PROGRESS_REMOVE_START, info->name,
(double)(percent * 100), list_count, (list_count -
_alpm_list_count(targ) + 1));
+ ++(*position);
+ }
+ if ( unlink(file) ) {
+ _alpm_log(PM_LOG_ERROR, _("cannot remove file %s"), file);
+ }
+ }
+ }
+}
+
int _alpm_remove_commit(pmtrans_t *trans, pmdb_t *db)
{
pmpkg_t *info;
- struct stat buf;
pmlist_t *targ, *lp;
- char line[PATH_MAX+1];
ASSERT(db != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
@@ -192,89 +268,13 @@
/* iterate through the list backwards, unlinking files */
for(lp = _alpm_list_last(info->files); lp; lp = lp->prev) {
- int nb = 0;
- double percent = 0.0;
- char *file = lp->data;
- char *md5 =_alpm_needbackup(file, info->backup);
- char *sha1 =_alpm_needbackup(file, info->backup);
-
- if (position != 0) {
- percent = (double)position / filenum;
- }
- if(md5 && sha1) {
- nb = 1;
- FREE(md5);
- FREE(sha1);
- }
- if(!nb && trans->type == PM_TRANS_TYPE_UPGRADE) {
- /* check noupgrade */
- if(_alpm_list_is_strin(file, handle->noupgrade)) {
- nb = 1;
- }
- }
- snprintf(line, PATH_MAX, "%s%s", handle->root, file);
- if(lstat(line, &buf)) {
- _alpm_log(PM_LOG_DEBUG, _("file %s does not exist"), file);
- continue;
- }
- if(S_ISDIR(buf.st_mode)) {
- if(rmdir(line)) {
- /* this is okay, other packages are probably using it. */
- _alpm_log(PM_LOG_DEBUG, _("keeping directory %s"), file);
- } else {
- _alpm_log(PM_LOG_FLOW2, _("removing directory %s"), file);
- }
- } else {
- /* check the "skip list" before removing the file.
- * see the big comment block in db_find_conflicts() for an
- * explanation. */
- int skipit = 0;
- pmlist_t *j;
- for(j = trans->skiplist; j; j = j->next) {
- if(!strcmp(file, (char*)j->data)) {
- skipit = 1;
- }
- }
- if(skipit) {
- _alpm_log(PM_LOG_FLOW2, _("skipping removal of %s as it has
moved to another package"),
- file);
- } else {
- /* if the file is flagged, back it up to .pacsave */
- if(nb) {
- if(trans->type == PM_TRANS_TYPE_UPGRADE) {
- /* we're upgrading so just leave the file as is.
pacman_add() will handle it */
- } else {
- if(!(trans->flags & PM_TRANS_FLAG_NOSAVE)) {
- char newpath[PATH_MAX];
- snprintf(newpath, PATH_MAX, "%s.pacsave", line);
- rename(line, newpath);
- _alpm_log(PM_LOG_WARNING, _("%s saved as %s"), file, newpath);
- alpm_logaction(_("%s saved as %s"), line, newpath);
- } else {
- _alpm_log(PM_LOG_FLOW2, _("unlinking %s"), file);
- if(unlink(line)) {
- _alpm_log(PM_LOG_ERROR, _("cannot remove file %s"), file);
- }
- }
- }
- } else {
- _alpm_log(PM_LOG_FLOW2, _("unlinking %s"), file);
- /* Need at here because we count only real unlinked files ? */
- PROGRESS(trans, PM_TRANS_PROGRESS_REMOVE_START, info->name,
(double)(percent * 100), _alpm_list_count(trans->packages),
(_alpm_list_count(trans->packages) - _alpm_list_count(targ) +1));
- position++;
- if(unlink(line)) {
- _alpm_log(PM_LOG_ERROR, _("cannot remove file %s"), file);
- }
- }
- }
- }
+ unlink_file(info, lp, targ, trans, filenum, &position);
}
}
if(trans->type != PM_TRANS_TYPE_UPGRADE) {
/* run the post-remove script if it exists */
if(info->scriptlet && !(trans->flags & PM_TRANS_FLAG_NOSCRIPTLET)) {
- char pm_install[PATH_MAX];
snprintf(pm_install, PATH_MAX, "%s/%s-%s/install", db->path,
info->name, info->version);
_alpm_runscriptlet(handle->root, pm_install, "post_remove",
info->version, NULL, trans);
}
More information about the pacman-dev
mailing list