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-rw-r--r--toys/lsb/mount.c65
1 files changed, 43 insertions, 22 deletions
diff --git a/toys/lsb/mount.c b/toys/lsb/mount.c
index 787c35c5..296d6864 100644
--- a/toys/lsb/mount.c
+++ b/toys/lsb/mount.c
@@ -3,6 +3,7 @@
* Copyright 2014 Rob Landley <rob@landley.net>
*
* See http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/mount.html
+ *
* Note: -hV is bad spec, haven't implemented -FsLU yet
* no mtab (/proc/mounts does it) so -n is NOP.
* TODO mount -o loop,autoclear (linux git 96c5865559ce)
@@ -30,11 +31,19 @@ config MOUNT
OPTIONS is a comma separated list of options, which can also be supplied
as --longopts.
- This mount autodetects loopback mounts (a file on a directory) and
- bind mounts (file on file, directory on directory), so you don't need
- to say --bind or --loop. You can also "mount -a /path" to mount everything
- in /etc/fstab under /path, even if it's noauto.
+ Autodetects loopback mounts (a file on a directory) and bind mounts (file
+ on file, directory on directory), so you don't need to say --bind or --loop.
+ You can also "mount -a /path" to mount everything in /etc/fstab under /path,
+ even if it's noauto. DEVICE starting with UUID= is identified by blkid -U.
+#config SMBMOUNT
+# bool "smbmount"
+# deault n
+# helo
+# usage: smbmount SHARE DIR
+#
+# Mount smb share with user/pasword prompt as necessary.
+#
#config NFSMOUNT
# bool "nfsmount"
# default n
@@ -75,6 +84,7 @@ GLOBALS(
// TODO "touch servername; mount -t cifs servername path"
// TODO mount -o remount a user mount
// TODO mount image.img sub (auto-loopback) then umount image.img
+// TODO mount UUID=blah
// Strip flags out of comma separated list of options, return flags,.
static long flag_opts(char *new, long flags, char **more)
@@ -135,6 +145,25 @@ static long flag_opts(char *new, long flags, char **more)
return flags;
}
+// Shell out to a program, returning the output string or NULL on error
+static char *tortoise(int loud, char **cmd)
+{
+ int rc, pipe, len;
+ pid_t pid;
+
+ pid = xpopen(cmd, &pipe, 1);
+ len = readall(pipe, toybuf, sizeof(toybuf)-1);
+ rc = xpclose(pid, pipe);
+ if (!rc && len > 1) {
+ if (toybuf[len-1] == '\n') --len;
+ toybuf[len] = 0;
+ return toybuf;
+ }
+ if (loud) error_msg("%s failed %d", *cmd, rc);
+
+ return 0;
+}
+
static void mount_filesystem(char *dev, char *dir, char *type,
unsigned long flags, char *opts)
{
@@ -153,6 +182,13 @@ static void mount_filesystem(char *dev, char *dir, char *type,
}
}
+ if (strstart(&dev, "UUID=")) {
+ char *s = tortoise(0, (char *[]){"blkid", "-U", dev, 0});
+
+ if (!dev) return error_msg("No uuid %s", dev);
+ dev = s;
+ }
+
// Autodetect bind mount or filesystem type
if (type && !strcmp(type, "auto")) type = 0;
@@ -231,24 +267,9 @@ static void mount_filesystem(char *dev, char *dir, char *type,
// device, then do the loopback setup and retry the mount.
if (rc && errno == ENOTBLK) {
- char *losetup[] = {"losetup", "-fs", dev, 0};
- int pipe, len;
- pid_t pid;
-
- if (flags & MS_RDONLY) losetup[1] = "-fsr";
- pid = xpopen(losetup, &pipe, 1);
- len = readall(pipe, toybuf, sizeof(toybuf)-1);
- rc = xpclose(pid, pipe);
- if (!rc && len > 1) {
- if (toybuf[len-1] == '\n') --len;
- toybuf[len] = 0;
- dev = toybuf;
-
- continue;
- }
- error_msg("losetup failed %d", rc);
-
- break;
+ dev = tortoise(1, (char *[]){"losetup",
+ (flags&MS_RDONLY) ? "-fsr" : "-fs", dev, 0});
+ if (!dev) break;
}
free(buf);