diff options
Diffstat (limited to 'daemon/guestfsd.c')
| -rw-r--r-- | daemon/guestfsd.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/daemon/guestfsd.c b/daemon/guestfsd.c index 49aca08d..4e293388 100644 --- a/daemon/guestfsd.c +++ b/daemon/guestfsd.c @@ -74,6 +74,12 @@ static char *read_cmdline (void); # define MAX(a,b) ((a)>(b)?(a):(b)) #endif +/* If root device is an ext2 filesystem, this is the major and minor. + * This is so we can ignore this device from the point of view of the + * user, eg. in guestfs_list_devices and many other places. + */ +static dev_t root_device = 0; + int verbose = 0; static int print_shell_quote (FILE *stream, const struct printf_info *info, const void *const *args); @@ -163,6 +169,10 @@ main (int argc, char *argv[]) #endif #endif + struct stat statbuf; + if (stat ("/", &statbuf) == 0) + root_device = statbuf.st_dev; + for (;;) { c = getopt_long (argc, argv, options, long_options, NULL); if (c == -1) break; @@ -449,6 +459,22 @@ read_cmdline (void) return r; } +/* Return true iff device is the root device (and therefore should be + * ignored from the point of view of user calls). + */ +int +is_root_device (const char *device) +{ + struct stat statbuf; + if (stat (device, &statbuf) == -1) { + perror (device); + return 0; + } + if (statbuf.st_rdev == root_device) + return 1; + return 0; +} + /* Turn "/path" into "/sysroot/path". * * Caller must check for NULL and call reply_with_perror ("malloc") |