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-rw-r--r--lib/libalpm/diskspace.c102
1 files changed, 80 insertions, 22 deletions
diff --git a/lib/libalpm/diskspace.c b/lib/libalpm/diskspace.c
index d0f52a63..91b655e5 100644
--- a/lib/libalpm/diskspace.c
+++ b/lib/libalpm/diskspace.c
@@ -60,6 +60,17 @@ static int mount_point_cmp(const void *p1, const void *p2)
return -strcmp(mp1->mount_dir, mp2->mount_dir);
}
+static void mount_point_list_free(alpm_list_t *mount_points)
+{
+ alpm_list_t *i;
+
+ for(i = mount_points; i; i = i->next) {
+ alpm_mountpoint_t *data = i->data;
+ FREE(data->mount_dir);
+ }
+ FREELIST(mount_points);
+}
+
static alpm_list_t *mount_point_list(alpm_handle_t *handle)
{
alpm_list_t *mount_points = NULL, *ptr;
@@ -276,6 +287,72 @@ static int calculate_installed_size(alpm_handle_t *handle,
return 0;
}
+static int check_mountpoint(alpm_handle_t *handle, alpm_mountpoint_t *mp)
+{
+ /* cushion is roughly min(5% capacity, 20MiB) */
+ fsblkcnt_t fivepc = (mp->fsp.f_blocks / 20) + 1;
+ fsblkcnt_t twentymb = (20 * 1024 * 1024 / mp->fsp.f_bsize) + 1;
+ fsblkcnt_t cushion = fivepc < twentymb ? fivepc : twentymb;
+ blkcnt_t needed = mp->max_blocks_needed + cushion;
+
+ _alpm_log(handle, ALPM_LOG_DEBUG,
+ "partition %s, needed %jd, cushion %ju, free %ju\n",
+ mp->mount_dir, (intmax_t)mp->max_blocks_needed,
+ (uintmax_t)cushion, (uintmax_t)mp->fsp.f_bfree);
+ if(needed >= 0 && (fsblkcnt_t)needed > mp->fsp.f_bfree) {
+ _alpm_log(handle, ALPM_LOG_ERROR,
+ _("Partition %s too full: %jd blocks needed, %jd blocks free\n"),
+ mp->mount_dir, (intmax_t)needed, (uintmax_t)mp->fsp.f_bfree);
+ return 1;
+ }
+ return 0;
+}
+
+int _alpm_check_downloadspace(alpm_handle_t *handle, const char *cachedir,
+ size_t num_files, off_t *file_sizes)
+{
+ alpm_list_t *mount_points;
+ alpm_mountpoint_t *cachedir_mp;
+ size_t j;
+ int error = 0;
+
+ mount_points = mount_point_list(handle);
+ if(mount_points == NULL) {
+ _alpm_log(handle, ALPM_LOG_ERROR, _("could not determine filesystem mount points\n"));
+ return -1;
+ }
+
+ cachedir_mp = match_mount_point(mount_points, cachedir);
+ if(cachedir == NULL) {
+ _alpm_log(handle, ALPM_LOG_ERROR, _("could not determine cachedir mount point %s\n"),
+ cachedir);
+ error = 1;
+ goto finish;
+ }
+
+ /* there's no need to check for a R/O mounted filesystem here, as
+ * _alpm_filecache_setup will never give us a non-writable directory */
+
+ /* round up the size of each file to the nearest block and accumulate */
+ for(j = 0; j < num_files; j++) {
+ cachedir_mp->max_blocks_needed += (file_sizes[j] + cachedir_mp->fsp.f_bsize + 1) /
+ cachedir_mp->fsp.f_bsize;
+ }
+
+ if(check_mountpoint(handle, cachedir_mp)) {
+ error = 1;
+ }
+
+finish:
+ mount_point_list_free(mount_points);
+
+ if(error) {
+ RET_ERR(handle, ALPM_ERR_DISK_SPACE, -1);
+ }
+
+ return 0;
+}
+
int _alpm_check_diskspace(alpm_handle_t *handle)
{
alpm_list_t *mount_points, *i;
@@ -344,32 +421,13 @@ int _alpm_check_diskspace(alpm_handle_t *handle)
_alpm_log(handle, ALPM_LOG_ERROR, _("Partition %s is mounted read only\n"),
data->mount_dir);
error = 1;
- } else if(data->used & USED_INSTALL) {
- /* cushion is roughly min(5% capacity, 20MiB) */
- fsblkcnt_t fivepc = (data->fsp.f_blocks / 20) + 1;
- fsblkcnt_t twentymb = (20 * 1024 * 1024 / data->fsp.f_bsize) + 1;
- fsblkcnt_t cushion = fivepc < twentymb ? fivepc : twentymb;
- blkcnt_t needed = data->max_blocks_needed + cushion;
-
- _alpm_log(handle, ALPM_LOG_DEBUG,
- "partition %s, needed %jd, cushion %ju, free %ju\n",
- data->mount_dir, (intmax_t)data->max_blocks_needed,
- (uintmax_t)cushion, (uintmax_t)data->fsp.f_bfree);
- if(needed >= 0 && (fsblkcnt_t)needed > data->fsp.f_bfree) {
- _alpm_log(handle, ALPM_LOG_ERROR,
- _("Partition %s too full: %jd blocks needed, %jd blocks free\n"),
- data->mount_dir, (intmax_t)needed, (uintmax_t)data->fsp.f_bfree);
- error = 1;
- }
+ } else if(data->used & USED_INSTALL && check_mountpoint(handle, data)) {
+ error = 1;
}
}
finish:
- for(i = mount_points; i; i = i->next) {
- alpm_mountpoint_t *data = i->data;
- FREE(data->mount_dir);
- }
- FREELIST(mount_points);
+ mount_point_list_free(mount_points);
if(error) {
RET_ERR(handle, ALPM_ERR_DISK_SPACE, -1);