Add support for /etc/filesystem when searching for an "auto" filesystem

This is bug #1246

1 files changed, 52 insertions, 16 deletions

diff --git a/util-linux/mount.c b/util-linux/mount.c
index 3d1f7ebbf..f6c647259 100644
--- a/util-linux/mount.c
+++ b/util-linux/mount.c
@@ -272,25 +272,61 @@ mount_one(char *blockDevice, char *directory, char *filesystemType,
 #else
         if (strcmp(filesystemType, "auto") == 0) {
                 char buf[255];
-                FILE *f = xfopen("/proc/filesystems", "r");
-
-                while (fgets(buf, sizeof(buf), f) != NULL) {
-                        filesystemType = buf;
-                        if (*filesystemType == '\t') {  // Not a nodev filesystem
+                FILE *f;
+                int read_proc = 0;
+                
+                f = fopen ( "/etc/filesystems", "r" );
+                
+                if ( f ) {
+                        while ( fgets ( buf, sizeof( buf ), f )) {
+                                if ( *buf == '*' )
+                                        read_proc = 1;
+                                else if ( *buf == '#' )
+                                        continue;
+                                else {
+                                        filesystemType = buf;
+                                
+                                        // Add NULL termination to each line
+                                        while (*filesystemType && !isspace ( *filesystemType ))
+                                                filesystemType++;
+                                        *filesystemType = '\0';
+
+                                        filesystemType = buf;
+                                        
+                                        if ( xstrlen ( filesystemType )) {
+                                                status = do_mount(blockDevice, directory, filesystemType,
+                                                                                  flags | MS_MGC_VAL, string_flags,
+                                                                                  useMtab, fakeIt, mtab_opts, mount_all);
+                                                if (status)
+                                                        break;
+                                        }
+                                        
+                                }
+                        }               
+                        fclose ( f );
+                }
 
-                                // Add NULL termination to each line
-                                while (*filesystemType && *filesystemType != '\n')
-                                        filesystemType++;
-                                *filesystemType = '\0';
+                if (( !f || read_proc ) && !status ) {
+                        f = xfopen("/proc/filesystems", "r");
 
+                        while (fgets(buf, sizeof(buf), f) != NULL) {
                                 filesystemType = buf;
-                                filesystemType++;       // hop past tab
-
-                                status = do_mount(blockDevice, directory, filesystemType,
-                                                                  flags | MS_MGC_VAL, string_flags,
-                                                                  useMtab, fakeIt, mtab_opts, mount_all);
-                                if (status)
-                                        break;
+                                if (*filesystemType == '\t') {  // Not a nodev filesystem
+        
+                                        // Add NULL termination to each line
+                                        while (*filesystemType && *filesystemType != '\n')
+                                                filesystemType++;
+                                        *filesystemType = '\0';
+
+                                        filesystemType = buf;
+                                        filesystemType++;       // hop past tab
+
+                                        status = do_mount(blockDevice, directory, filesystemType,
+                                                                          flags | MS_MGC_VAL, string_flags,
+                                                                          useMtab, fakeIt, mtab_opts, mount_all);
+                                        if (status)
+                                                break;
+                                }
                         }
                 }
                 fclose(f);