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author | Richard Jones <rjones@redhat.com> | 2009-04-03 22:25:34 +0100 |
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committer | Richard Jones <rjones@redhat.com> | 2009-04-03 22:25:34 +0100 |
commit | 99bd425a0a8fb02c27e0c22b32dafa804773a7b1 (patch) | |
tree | 6f940e83286ba891cc0a6680cfd5d6dafcf0e89a /daemon/mount.c | |
parent | f5d2602bf6d40ecc71a5a17e0be9f480e9a4453a (diff) | |
download | libguestfs-99bd425a0a8fb02c27e0c22b32dafa804773a7b1.tar.gz libguestfs-99bd425a0a8fb02c27e0c22b32dafa804773a7b1.tar.xz libguestfs-99bd425a0a8fb02c27e0c22b32dafa804773a7b1.zip |
Implemented 'mount' and 'touch' commands.
Diffstat (limited to 'daemon/mount.c')
-rw-r--r-- | daemon/mount.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/daemon/mount.c b/daemon/mount.c new file mode 100644 index 00000000..440ec0de --- /dev/null +++ b/daemon/mount.c @@ -0,0 +1,76 @@ +/* libguestfs - the guestfsd daemon + * Copyright (C) 2009 Red Hat Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <config.h> + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "daemon.h" +#include "actions.h" + +/* You must mount something on "/" first, hence: */ +int root_mounted = 0; + +/* The "simple mount" call offers no complex options, you can just + * mount a device on a mountpoint. + * + * It's tempting to try a direct mount(2) syscall, but that doesn't + * do any autodetection, so we are better off calling out to + * /bin/mount. + */ + +int +do_mount (const char *device, const char *mountpoint) +{ + int len, r, is_root; + char *mp; + char *error; + + is_root = strcmp (mountpoint, "/") == 0; + + if (!root_mounted && !is_root) { + reply_with_error ("mount: you must mount something on / first"); + return -1; + } + + len = strlen (mountpoint) + 9; + + mp = malloc (len); + if (!mp) { + reply_with_perror ("malloc"); + return -1; + } + + snprintf (mp, len, "/sysroot%s", mountpoint); + + r = command (NULL, &error, + "mount", "-o", "sync,noatime", device, mp, NULL); + if (r == -1) { + reply_with_error ("mount: %s on %s: %s", device, mountpoint, error); + free (error); + return -1; + } + + if (is_root) + root_mounted = 1; + + return 0; +} |