diff options
Diffstat (limited to 'mtdutils')
| -rw-r--r-- | mtdutils/mounts.c | 89 |
1 files changed, 14 insertions, 75 deletions
diff --git a/mtdutils/mounts.c b/mtdutils/mounts.c index c90fc8a..6a9b03d 100644 --- a/mtdutils/mounts.c +++ b/mtdutils/mounts.c @@ -14,6 +14,7 @@ * limitations under the License. */ +#include <mntent.h> #include <stdio.h> #include <stdlib.h> #include <string.h> @@ -59,10 +60,8 @@ free_volume_internals(const MountedVolume *volume, int zero) int scan_mounted_volumes() { - char buf[2048]; - const char *bufp; - int fd; - ssize_t nbytes; + FILE* fp; + struct mntent* mentry; if (g_mounts_state.volumes == NULL) { const int numv = 32; @@ -84,80 +83,20 @@ scan_mounted_volumes() } g_mounts_state.volume_count = 0; - /* Open and read the file contents. - */ - fd = open(PROC_MOUNTS_FILENAME, O_RDONLY); - if (fd < 0) { - goto bail; - } - nbytes = read(fd, buf, sizeof(buf) - 1); - close(fd); - if (nbytes < 0) { - goto bail; + /* Open and read mount table entries. */ + fp = setmntent(PROC_MOUNTS_FILENAME, "r"); + if (fp == NULL) { + return -1; } - buf[nbytes] = '\0'; - - /* Parse the contents of the file, which looks like: - * - * # cat /proc/mounts - * rootfs / rootfs rw 0 0 - * /dev/pts /dev/pts devpts rw 0 0 - * /proc /proc proc rw 0 0 - * /sys /sys sysfs rw 0 0 - * /dev/block/mtdblock4 /system yaffs2 rw,nodev,noatime,nodiratime 0 0 - * /dev/block/mtdblock5 /data yaffs2 rw,nodev,noatime,nodiratime 0 0 - * /dev/block/mmcblk0p1 /sdcard vfat rw,sync,dirsync,fmask=0000,dmask=0000,codepage=cp437,iocharset=iso8859-1,utf8 0 0 - * - * The zeroes at the end are dummy placeholder fields to make the - * output match Linux's /etc/mtab, but don't represent anything here. - */ - bufp = buf; - while (nbytes > 0) { - char device[64]; - char mount_point[64]; - char filesystem[64]; - char flags[128]; - int matches; - - /* %as is a gnu extension that malloc()s a string for each field. - */ - matches = sscanf(bufp, "%63s %63s %63s %127s", - device, mount_point, filesystem, flags); - - if (matches == 4) { - device[sizeof(device)-1] = '\0'; - mount_point[sizeof(mount_point)-1] = '\0'; - filesystem[sizeof(filesystem)-1] = '\0'; - flags[sizeof(flags)-1] = '\0'; - - MountedVolume *v = - &g_mounts_state.volumes[g_mounts_state.volume_count++]; - v->device = strdup(device); - v->mount_point = strdup(mount_point); - v->filesystem = strdup(filesystem); - v->flags = strdup(flags); - } else { -printf("matches was %d on <<%.40s>>\n", matches, bufp); - } - - /* Eat the line. - */ - while (nbytes > 0 && *bufp != '\n') { - bufp++; - nbytes--; - } - if (nbytes > 0) { - bufp++; - nbytes--; - } + while ((mentry = getmntent(fp)) != NULL) { + MountedVolume* v = &g_mounts_state.volumes[g_mounts_state.volume_count++]; + v->device = strdup(mentry->mnt_fsname); + v->mount_point = strdup(mentry->mnt_dir); + v->filesystem = strdup(mentry->mnt_type); + v->flags = strdup(mentry->mnt_opts); } - + endmntent(fp); return 0; - -bail: -//TODO: free the strings we've allocated. - g_mounts_state.volume_count = 0; - return -1; } const MountedVolume * |