From 1e4579556ca54bdf9ccb86933c64bc6094c04e9a Mon Sep 17 00:00:00 2001 From: =?utf8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Tue, 23 Dec 2014 22:20:13 +0100 Subject: [PATCH] libfstools: ubi: rework reading volumes MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit UBI volume IDs don't have to be contiguous, this may happen if there were few and the not last one was removed. In such case we may have e.g. ubi0_0, ubi0_2. It means we can't simply read value from "volumes_count" and iterate from 0 to the count - 1. This patch rewrites ubi_part_match to read whole directory and look for ubi%d_%d entries in it. Signed-off-by: Rafał Miłecki --- libfstools/ubi.c | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-) diff --git a/libfstools/ubi.c b/libfstools/ubi.c index ac9eb1b..0f6e37a 100644 --- a/libfstools/ubi.c +++ b/libfstools/ubi.c @@ -165,22 +165,34 @@ static int ubi_volume_match(struct volume *v, char *name, int ubi_num, int volid static int ubi_part_match(struct volume *v, char *name, unsigned int ubi_num) { - unsigned int i, volumes_count; + DIR *ubi_dir; + struct dirent *ubi_dirent; + unsigned int volid; char devdir[BUFLEN]; + int ret = -1; snprintf(devdir, sizeof(devdir), "%s/ubi%u", ubi_dir_name, ubi_num); - if (read_uint_from_file(devdir, "volumes_count", &volumes_count)) - return -1; + ubi_dir = opendir(devdir); + if (!ubi_dir) + return ret; - for (i=0;id_name, "ubi", 3)) + continue; + + if (sscanf(ubi_dirent->d_name, "ubi%*u_%u", &volid) != 1) + continue; + + if (!ubi_volume_match(v, name, ubi_num, volid)) { + ret = 0; + break; } } + closedir(ubi_dir); - return -1; + return ret; } static int ubi_volume_find(struct volume *v, char *name) -- 2.25.1