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Add function to match file to mount point 

For a given file, determine which mount point it is on or will be
installed to.  Take into account that we might be using an alternative
installation root.

Add additional helper function added to sort mount point list for easier
matching.

Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
This commit is contained in:
Allan McRae 2010-11-16 16:24:52 +10:00 committed by Dan McGee
parent f4e9deb6d7
commit 695656d252
1 changed files with 28 additions and 0 deletions
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28
lib/libalpm/diskspace.c
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@ -38,6 +38,12 @@
#include "alpm_list.h"
#include "util.h"
#include "log.h"
#include "handle.h"
static int mount_point_cmp(const alpm_mountpoint_t *mp1, const alpm_mountpoint_t *mp2)
{
return(strcmp(mp1->mount_dir, mp2->mount_dir));
}
static alpm_list_t *mount_point_list()
{
@ -121,9 +127,31 @@ static alpm_list_t *mount_point_list()
}
#endif
mount_points = alpm_list_msort(mount_points, alpm_list_count(mount_points),
(alpm_list_fn_cmp)mount_point_cmp);
return(mount_points);
}
static alpm_list_t *match_mount_point(const alpm_list_t *mount_points, const char *file)
{
char real_path[PATH_MAX];
snprintf(real_path, PATH_MAX, "%s%s", handle->root, file);
alpm_list_t *mp = alpm_list_last(mount_points);
do {
alpm_mountpoint_t *data = mp->data;
if(strncmp(data->mount_dir, real_path, strlen(data->mount_dir)) == 0) {
return mp;
}
mp = mp->prev;
} while (mp != alpm_list_last(mount_points));
/* should not get here... */
return NULL;
}
int _alpm_check_diskspace(pmtrans_t *trans, pmdb_t *db)
{
alpm_list_t *mount_points;