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glib/gio/gunixmounts.c
Patrick Welche 4f775b7b7f GUnixMounts: Fall back to polling on systems without mtab 
This is necessary for many of the BSD family at least.

https://bugzilla.gnome.org/show_bug.cgi?id=583330
2014-08-19 10:48:12 +02:00

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61 KiB
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2006-2007 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* Author: Alexander Larsson <alexl@redhat.com>
*/
#include "config.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#ifndef HAVE_SYSCTLBYNAME
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#endif
#ifdef HAVE_POLL
#include <poll.h>
#endif
#include <stdio.h>
#include <unistd.h>
#include <sys/time.h>
#include <errno.h>
#include <string.h>
#include <signal.h>
#include <gstdio.h>
#include <dirent.h>
#if HAVE_SYS_STATFS_H
#include <sys/statfs.h>
#endif
#if HAVE_SYS_STATVFS_H
#include <sys/statvfs.h>
#endif
#if HAVE_SYS_VFS_H
#include <sys/vfs.h>
#elif HAVE_SYS_MOUNT_H
#if HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#include <sys/mount.h>
#endif
#ifndef O_BINARY
#define O_BINARY 0
#endif
#include "gunixmounts.h"
#include "gfile.h"
#include "gfilemonitor.h"
#include "glibintl.h"
#include "gthemedicon.h"
#ifdef HAVE_MNTENT_H
static const char *_resolve_dev_root (void);
#endif
/**
* SECTION:gunixmounts
* @include: gio/gunixmounts.h
* @short_description: UNIX mounts
*
* Routines for managing mounted UNIX mount points and paths.
*
* Note that `<gio/gunixmounts.h>` belongs to the UNIX-specific GIO
* interfaces, thus you have to use the `gio-unix-2.0.pc` pkg-config
* file when using it.
*/
/**
* GUnixMountType:
* @G_UNIX_MOUNT_TYPE_UNKNOWN: Unknown UNIX mount type.
* @G_UNIX_MOUNT_TYPE_FLOPPY: Floppy disk UNIX mount type.
* @G_UNIX_MOUNT_TYPE_CDROM: CDROM UNIX mount type.
* @G_UNIX_MOUNT_TYPE_NFS: Network File System (NFS) UNIX mount type.
* @G_UNIX_MOUNT_TYPE_ZIP: ZIP UNIX mount type.
* @G_UNIX_MOUNT_TYPE_JAZ: JAZZ UNIX mount type.
* @G_UNIX_MOUNT_TYPE_MEMSTICK: Memory Stick UNIX mount type.
* @G_UNIX_MOUNT_TYPE_CF: Compact Flash UNIX mount type.
* @G_UNIX_MOUNT_TYPE_SM: Smart Media UNIX mount type.
* @G_UNIX_MOUNT_TYPE_SDMMC: SD/MMC UNIX mount type.
* @G_UNIX_MOUNT_TYPE_IPOD: iPod UNIX mount type.
* @G_UNIX_MOUNT_TYPE_CAMERA: Digital camera UNIX mount type.
* @G_UNIX_MOUNT_TYPE_HD: Hard drive UNIX mount type.
*
* Types of UNIX mounts.
**/
typedef enum {
G_UNIX_MOUNT_TYPE_UNKNOWN,
G_UNIX_MOUNT_TYPE_FLOPPY,
G_UNIX_MOUNT_TYPE_CDROM,
G_UNIX_MOUNT_TYPE_NFS,
G_UNIX_MOUNT_TYPE_ZIP,
G_UNIX_MOUNT_TYPE_JAZ,
G_UNIX_MOUNT_TYPE_MEMSTICK,
G_UNIX_MOUNT_TYPE_CF,
G_UNIX_MOUNT_TYPE_SM,
G_UNIX_MOUNT_TYPE_SDMMC,
G_UNIX_MOUNT_TYPE_IPOD,
G_UNIX_MOUNT_TYPE_CAMERA,
G_UNIX_MOUNT_TYPE_HD
} GUnixMountType;
struct _GUnixMountEntry {
char *mount_path;
char *device_path;
char *filesystem_type;
gboolean is_read_only;
gboolean is_system_internal;
};
struct _GUnixMountPoint {
char *mount_path;
char *device_path;
char *filesystem_type;
char *options;
gboolean is_read_only;
gboolean is_user_mountable;
gboolean is_loopback;
};
enum {
MOUNTS_CHANGED,
MOUNTPOINTS_CHANGED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL];
struct _GUnixMountMonitor {
GObject parent;
GFileMonitor *fstab_monitor;
GFileMonitor *mtab_monitor;
GList *mount_poller_mounts;
GSource *proc_mounts_watch_source;
};
struct _GUnixMountMonitorClass {
GObjectClass parent_class;
};
static GUnixMountMonitor *the_mount_monitor = NULL;
static GList *_g_get_unix_mounts (void);
static GList *_g_get_unix_mount_points (void);
static guint64 mount_poller_time = 0;
G_DEFINE_TYPE (GUnixMountMonitor, g_unix_mount_monitor, G_TYPE_OBJECT);
#define MOUNT_POLL_INTERVAL 4000
#ifdef HAVE_SYS_MNTTAB_H
#define MNTOPT_RO "ro"
#endif
#ifdef HAVE_MNTENT_H
#include <mntent.h>
#elif defined (HAVE_SYS_MNTTAB_H)
#include <sys/mnttab.h>
#endif
#ifdef HAVE_SYS_VFSTAB_H
#include <sys/vfstab.h>
#endif
#if defined(HAVE_SYS_MNTCTL_H) && defined(HAVE_SYS_VMOUNT_H) && defined(HAVE_SYS_VFS_H)
#include <sys/mntctl.h>
#include <sys/vfs.h>
#include <sys/vmount.h>
#include <fshelp.h>
#endif
#if (defined(HAVE_GETVFSSTAT) || defined(HAVE_GETFSSTAT)) && defined(HAVE_FSTAB_H) && defined(HAVE_SYS_MOUNT_H)
#include <sys/param.h>
#include <sys/ucred.h>
#include <sys/mount.h>
#include <fstab.h>
#ifdef HAVE_SYS_SYSCTL_H
#include <sys/sysctl.h>
#endif
#endif
#ifndef HAVE_SETMNTENT
#define setmntent(f,m) fopen(f,m)
#endif
#ifndef HAVE_ENDMNTENT
#define endmntent(f) fclose(f)
#endif
static gboolean
is_in (const char *value, const char *set[])
{
int i;
for (i = 0; set[i] != NULL; i++)
{
if (strcmp (set[i], value) == 0)
return TRUE;
}
return FALSE;
}
/**
* g_unix_is_mount_path_system_internal:
* @mount_path: a mount path, e.g. `/media/disk` or `/usr`
*
* Determines if @mount_path is considered an implementation of the
* OS. This is primarily used for hiding mountable and mounted volumes
* that only are used in the OS and has little to no relevance to the
* casual user.
*
* Returns: %TRUE if @mount_path is considered an implementation detail
* of the OS.
**/
gboolean
g_unix_is_mount_path_system_internal (const char *mount_path)
{
const char *ignore_mountpoints[] = {
/* Includes all FHS 2.3 toplevel dirs and other specilized
* directories that we want to hide from the user.
*/
"/", /* we already have "Filesystem root" in Nautilus */
"/bin",
"/boot",
"/compat/linux/proc",
"/compat/linux/sys",
"/dev",
"/etc",
"/home",
"/lib",
"/lib64",
"/libexec",
"/live/cow",
"/live/image",
"/media",
"/mnt",
"/opt",
"/rescue",
"/root",
"/sbin",
"/srv",
"/tmp",
"/usr",
"/usr/X11R6",
"/usr/local",
"/usr/obj",
"/usr/ports",
"/usr/src",
"/usr/xobj",
"/var",
"/var/crash",
"/var/local",
"/var/log",
"/var/log/audit", /* https://bugzilla.redhat.com/show_bug.cgi?id=333041 */
"/var/mail",
"/var/run",
"/var/tmp", /* https://bugzilla.redhat.com/show_bug.cgi?id=335241 */
"/proc",
"/sbin",
"/net",
"/sys",
NULL
};
if (is_in (mount_path, ignore_mountpoints))
return TRUE;
if (g_str_has_prefix (mount_path, "/dev/") ||
g_str_has_prefix (mount_path, "/proc/") ||
g_str_has_prefix (mount_path, "/sys/"))
return TRUE;
if (g_str_has_suffix (mount_path, "/.gvfs"))
return TRUE;
return FALSE;
}
static gboolean
guess_system_internal (const char *mountpoint,
const char *fs,
const char *device)
{
const char *ignore_fs[] = {
"auto",
"autofs",
"devfs",
"devpts",
"ecryptfs",
"fdescfs",
"kernfs",
"linprocfs",
"mfs",
"nullfs",
"proc",
"procfs",
"ptyfs",
"rootfs",
"selinuxfs",
"sysfs",
"tmpfs",
"usbfs",
"nfsd",
"rpc_pipefs",
"zfs",
NULL
};
const char *ignore_devices[] = {
"none",
"sunrpc",
"devpts",
"nfsd",
"/dev/loop",
"/dev/vn",
NULL
};
if (is_in (fs, ignore_fs))
return TRUE;
if (is_in (device, ignore_devices))
return TRUE;
if (g_unix_is_mount_path_system_internal (mountpoint))
return TRUE;
return FALSE;
}
#ifdef HAVE_MNTENT_H
static char *
get_mtab_read_file (void)
{
#ifdef _PATH_MOUNTED
# ifdef __linux__
return "/proc/mounts";
# else
return _PATH_MOUNTED;
# endif
#else
return "/etc/mtab";
#endif
}
static char *
get_mtab_monitor_file (void)
{
#ifdef _PATH_MOUNTED
# ifdef __linux__
return "/proc/mounts";
# else
return _PATH_MOUNTED;
# endif
#else
return "/etc/mtab";
#endif
}
#ifndef HAVE_GETMNTENT_R
G_LOCK_DEFINE_STATIC(getmntent);
#endif
static GList *
_g_get_unix_mounts (void)
{
#ifdef HAVE_GETMNTENT_R
struct mntent ent;
char buf[1024];
#endif
struct mntent *mntent;
FILE *file;
char *read_file;
GUnixMountEntry *mount_entry;
GHashTable *mounts_hash;
GList *return_list;
read_file = get_mtab_read_file ();
file = setmntent (read_file, "r");
if (file == NULL)
return NULL;
return_list = NULL;
mounts_hash = g_hash_table_new (g_str_hash, g_str_equal);
#ifdef HAVE_GETMNTENT_R
while ((mntent = getmntent_r (file, &ent, buf, sizeof (buf))) != NULL)
#else
G_LOCK (getmntent);
while ((mntent = getmntent (file)) != NULL)
#endif
{
/* ignore any mnt_fsname that is repeated and begins with a '/'
*
* We do this to avoid being fooled by --bind mounts, since
* these have the same device as the location they bind to.
* It's not an ideal solution to the problem, but it's likely that
* the most important mountpoint is first and the --bind ones after
* that aren't as important. So it should work.
*
* The '/' is to handle procfs, tmpfs and other no device mounts.
*/
if (mntent->mnt_fsname != NULL &&
mntent->mnt_fsname[0] == '/' &&
g_hash_table_lookup (mounts_hash, mntent->mnt_fsname))
continue;
mount_entry = g_new0 (GUnixMountEntry, 1);
mount_entry->mount_path = g_strdup (mntent->mnt_dir);
if (g_strcmp0 (mntent->mnt_fsname, "/dev/root") == 0)
mount_entry->device_path = g_strdup (_resolve_dev_root ());
else
mount_entry->device_path = g_strdup (mntent->mnt_fsname);
mount_entry->filesystem_type = g_strdup (mntent->mnt_type);
#if defined (HAVE_HASMNTOPT)
if (hasmntopt (mntent, MNTOPT_RO) != NULL)
mount_entry->is_read_only = TRUE;
#endif
mount_entry->is_system_internal =
guess_system_internal (mount_entry->mount_path,
mount_entry->filesystem_type,
mount_entry->device_path);
g_hash_table_insert (mounts_hash,
mount_entry->device_path,
mount_entry->device_path);
return_list = g_list_prepend (return_list, mount_entry);
}
g_hash_table_destroy (mounts_hash);
endmntent (file);
#ifndef HAVE_GETMNTENT_R
G_UNLOCK (getmntent);
#endif
return g_list_reverse (return_list);
}
#elif defined (HAVE_SYS_MNTTAB_H)
G_LOCK_DEFINE_STATIC(getmntent);
static char *
get_mtab_read_file (void)
{
#ifdef _PATH_MOUNTED
return _PATH_MOUNTED;
#else
return "/etc/mnttab";
#endif
}
static char *
get_mtab_monitor_file (void)
{
return get_mtab_read_file ();
}
static GList *
_g_get_unix_mounts (void)
{
struct mnttab mntent;
FILE *file;
char *read_file;
GUnixMountEntry *mount_entry;
GList *return_list;
read_file = get_mtab_read_file ();
file = setmntent (read_file, "r");
if (file == NULL)
return NULL;
return_list = NULL;
G_LOCK (getmntent);
while (! getmntent (file, &mntent))
{
mount_entry = g_new0 (GUnixMountEntry, 1);
mount_entry->mount_path = g_strdup (mntent.mnt_mountp);
mount_entry->device_path = g_strdup (mntent.mnt_special);
mount_entry->filesystem_type = g_strdup (mntent.mnt_fstype);
#if defined (HAVE_HASMNTOPT)
if (hasmntopt (&mntent, MNTOPT_RO) != NULL)
mount_entry->is_read_only = TRUE;
#endif
mount_entry->is_system_internal =
guess_system_internal (mount_entry->mount_path,
mount_entry->filesystem_type,
mount_entry->device_path);
return_list = g_list_prepend (return_list, mount_entry);
}
endmntent (file);
G_UNLOCK (getmntent);
return g_list_reverse (return_list);
}
#elif defined(HAVE_SYS_MNTCTL_H) && defined(HAVE_SYS_VMOUNT_H) && defined(HAVE_SYS_VFS_H)
static char *
get_mtab_monitor_file (void)
{
return NULL;
}
static GList *
_g_get_unix_mounts (void)
{
struct vfs_ent *fs_info;
struct vmount *vmount_info;
int vmount_number;
unsigned int vmount_size;
int current;
GList *return_list;
if (mntctl (MCTL_QUERY, sizeof (vmount_size), &vmount_size) != 0)
{
g_warning ("Unable to know the number of mounted volumes\n");
return NULL;
}
vmount_info = (struct vmount*)g_malloc (vmount_size);
vmount_number = mntctl (MCTL_QUERY, vmount_size, vmount_info);
if (vmount_info->vmt_revision != VMT_REVISION)
g_warning ("Bad vmount structure revision number, want %d, got %d\n", VMT_REVISION, vmount_info->vmt_revision);
if (vmount_number < 0)
{
g_warning ("Unable to recover mounted volumes information\n");
g_free (vmount_info);
return NULL;
}
return_list = NULL;
while (vmount_number > 0)
{
mount_entry = g_new0 (GUnixMountEntry, 1);
mount_entry->device_path = g_strdup (vmt2dataptr (vmount_info, VMT_OBJECT));
mount_entry->mount_path = g_strdup (vmt2dataptr (vmount_info, VMT_STUB));
/* is_removable = (vmount_info->vmt_flags & MNT_REMOVABLE) ? 1 : 0; */
mount_entry->is_read_only = (vmount_info->vmt_flags & MNT_READONLY) ? 1 : 0;
fs_info = getvfsbytype (vmount_info->vmt_gfstype);
if (fs_info == NULL)
mount_entry->filesystem_type = g_strdup ("unknown");
else
mount_entry->filesystem_type = g_strdup (fs_info->vfsent_name);
mount_entry->is_system_internal =
guess_system_internal (mount_entry->mount_path,
mount_entry->filesystem_type,
mount_entry->device_path);
return_list = g_list_prepend (return_list, mount_entry);
vmount_info = (struct vmount *)( (char*)vmount_info
+ vmount_info->vmt_length);
vmount_number--;
}
g_free (vmount_info);
return g_list_reverse (return_list);
}
#elif (defined(HAVE_GETVFSSTAT) || defined(HAVE_GETFSSTAT)) && defined(HAVE_FSTAB_H) && defined(HAVE_SYS_MOUNT_H)
static char *
get_mtab_monitor_file (void)
{
return NULL;
}
static GList *
_g_get_unix_mounts (void)
{
#if defined(USE_STATVFS)
struct statvfs *mntent = NULL;
#elif defined(USE_STATFS)
struct statfs *mntent = NULL;
#else
#error statfs juggling failed
#endif
size_t bufsize;
int num_mounts, i;
GUnixMountEntry *mount_entry;
GList *return_list;
/* Pass NOWAIT to avoid blocking trying to update NFS mounts. */
#if defined(USE_STATVFS) && defined(HAVE_GETVFSSTAT)
num_mounts = getvfsstat (NULL, 0, ST_NOWAIT);
#elif defined(USE_STATFS) && defined(HAVE_GETFSSTAT)
num_mounts = getfsstat (NULL, 0, MNT_NOWAIT);
#endif
if (num_mounts == -1)
return NULL;
bufsize = num_mounts * sizeof (*mntent);
mntent = g_malloc (bufsize);
#if defined(USE_STATVFS) && defined(HAVE_GETVFSSTAT)
num_mounts = getvfsstat (mntent, bufsize, ST_NOWAIT);
#elif defined(USE_STATFS) && defined(HAVE_GETFSSTAT)
num_mounts = getfsstat (mntent, bufsize, MNT_NOWAIT);
#endif
if (num_mounts == -1)
return NULL;
return_list = NULL;
for (i = 0; i < num_mounts; i++)
{
mount_entry = g_new0 (GUnixMountEntry, 1);
mount_entry->mount_path = g_strdup (mntent[i].f_mntonname);
mount_entry->device_path = g_strdup (mntent[i].f_mntfromname);
mount_entry->filesystem_type = g_strdup (mntent[i].f_fstypename);
#if defined(USE_STATVFS)
if (mntent[i].f_flag & ST_RDONLY)
#elif defined(USE_STATFS)
if (mntent[i].f_flags & MNT_RDONLY)
#else
#error statfs juggling failed
#endif
mount_entry->is_read_only = TRUE;
mount_entry->is_system_internal =
guess_system_internal (mount_entry->mount_path,
mount_entry->filesystem_type,
mount_entry->device_path);
return_list = g_list_prepend (return_list, mount_entry);
}
g_free (mntent);
return g_list_reverse (return_list);
}
#elif defined(__INTERIX)
static char *
get_mtab_monitor_file (void)
{
return NULL;
}
static GList *
_g_get_unix_mounts (void)
{
DIR *dirp;
GList* return_list = NULL;
char filename[9 + NAME_MAX];
dirp = opendir ("/dev/fs");
if (!dirp)
{
g_warning ("unable to read /dev/fs!");
return NULL;
}
while (1)
{
struct statvfs statbuf;
struct dirent entry;
struct dirent* result;
if (readdir_r (dirp, &entry, &result) || result == NULL)
break;
strcpy (filename, "/dev/fs/");
strcat (filename, entry.d_name);
if (statvfs (filename, &statbuf) == 0)
{
GUnixMountEntry* mount_entry = g_new0(GUnixMountEntry, 1);
mount_entry->mount_path = g_strdup (statbuf.f_mntonname);
mount_entry->device_path = g_strdup (statbuf.f_mntfromname);
mount_entry->filesystem_type = g_strdup (statbuf.f_fstypename);
if (statbuf.f_flag & ST_RDONLY)
mount_entry->is_read_only = TRUE;
return_list = g_list_prepend(return_list, mount_entry);
}
}
return_list = g_list_reverse (return_list);
closedir (dirp);
return return_list;
}
#else
#error No _g_get_unix_mounts() implementation for system
#endif
/* _g_get_unix_mount_points():
* read the fstab.
* don't return swap and ignore mounts.
*/
static char *
get_fstab_file (void)
{
#if defined(HAVE_SYS_MNTCTL_H) && defined(HAVE_SYS_VMOUNT_H) && defined(HAVE_SYS_VFS_H)
/* AIX */
return "/etc/filesystems";
#elif defined(_PATH_MNTTAB)
return _PATH_MNTTAB;
#elif defined(VFSTAB)
return VFSTAB;
#else
return "/etc/fstab";
#endif
}
#ifdef HAVE_MNTENT_H
static GList *
_g_get_unix_mount_points (void)
{
#ifdef HAVE_GETMNTENT_R
struct mntent ent;
char buf[1024];
#endif
struct mntent *mntent;
FILE *file;
char *read_file;
GUnixMountPoint *mount_entry;
GList *return_list;
read_file = get_fstab_file ();
file = setmntent (read_file, "r");
if (file == NULL)
return NULL;
return_list = NULL;
#ifdef HAVE_GETMNTENT_R
while ((mntent = getmntent_r (file, &ent, buf, sizeof (buf))) != NULL)
#else
G_LOCK (getmntent);
while ((mntent = getmntent (file)) != NULL)
#endif
{
if ((strcmp (mntent->mnt_dir, "ignore") == 0) ||
(strcmp (mntent->mnt_dir, "swap") == 0) ||
(strcmp (mntent->mnt_dir, "none") == 0))
continue;
#ifdef HAVE_HASMNTOPT
/* We ignore bind fstab entries, as we ignore bind mounts anyway */
if (hasmntopt (mntent, "bind"))
continue;
#endif
mount_entry = g_new0 (GUnixMountPoint, 1);
mount_entry->mount_path = g_strdup (mntent->mnt_dir);
if (strcmp (mntent->mnt_fsname, "/dev/root") == 0)
mount_entry->device_path = g_strdup (_resolve_dev_root ());
else
mount_entry->device_path = g_strdup (mntent->mnt_fsname);
mount_entry->filesystem_type = g_strdup (mntent->mnt_type);
mount_entry->options = g_strdup (mntent->mnt_opts);
#ifdef HAVE_HASMNTOPT
if (hasmntopt (mntent, MNTOPT_RO) != NULL)
mount_entry->is_read_only = TRUE;
if (hasmntopt (mntent, "loop") != NULL)
mount_entry->is_loopback = TRUE;
#endif
if ((mntent->mnt_type != NULL && strcmp ("supermount", mntent->mnt_type) == 0)
#ifdef HAVE_HASMNTOPT
|| (hasmntopt (mntent, "user") != NULL
&& hasmntopt (mntent, "user") != hasmntopt (mntent, "user_xattr"))
|| hasmntopt (mntent, "pamconsole") != NULL
|| hasmntopt (mntent, "users") != NULL
|| hasmntopt (mntent, "owner") != NULL
#endif
)
mount_entry->is_user_mountable = TRUE;
return_list = g_list_prepend (return_list, mount_entry);
}
endmntent (file);
#ifndef HAVE_GETMNTENT_R
G_UNLOCK (getmntent);
#endif
return g_list_reverse (return_list);
}
#elif defined (HAVE_SYS_MNTTAB_H)
static GList *
_g_get_unix_mount_points (void)
{
struct mnttab mntent;
FILE *file;
char *read_file;
GUnixMountPoint *mount_entry;
GList *return_list;
read_file = get_fstab_file ();
file = setmntent (read_file, "r");
if (file == NULL)
return NULL;
return_list = NULL;
G_LOCK (getmntent);
while (! getmntent (file, &mntent))
{
if ((strcmp (mntent.mnt_mountp, "ignore") == 0) ||
(strcmp (mntent.mnt_mountp, "swap") == 0) ||
(strcmp (mntent.mnt_mountp, "none") == 0))
continue;
mount_entry = g_new0 (GUnixMountPoint, 1);
mount_entry->mount_path = g_strdup (mntent.mnt_mountp);
mount_entry->device_path = g_strdup (mntent.mnt_special);
mount_entry->filesystem_type = g_strdup (mntent.mnt_fstype);
mount_entry->options = g_strdup (mntent.mnt_mntopts);
#ifdef HAVE_HASMNTOPT
if (hasmntopt (&mntent, MNTOPT_RO) != NULL)
mount_entry->is_read_only = TRUE;
if (hasmntopt (&mntent, "lofs") != NULL)
mount_entry->is_loopback = TRUE;
#endif
if ((mntent.mnt_fstype != NULL)
#ifdef HAVE_HASMNTOPT
|| (hasmntopt (&mntent, "user") != NULL
&& hasmntopt (&mntent, "user") != hasmntopt (&mntent, "user_xattr"))
|| hasmntopt (&mntent, "pamconsole") != NULL
|| hasmntopt (&mntent, "users") != NULL
|| hasmntopt (&mntent, "owner") != NULL
#endif
)
mount_entry->is_user_mountable = TRUE;
return_list = g_list_prepend (return_list, mount_entry);
}
endmntent (file);
G_UNLOCK (getmntent);
return g_list_reverse (return_list);
}
#elif defined(HAVE_SYS_MNTCTL_H) && defined(HAVE_SYS_VMOUNT_H) && defined(HAVE_SYS_VFS_H)
/* functions to parse /etc/filesystems on aix */
/* read character, ignoring comments (begin with '*', end with '\n' */
static int
aix_fs_getc (FILE *fd)
{
int c;
while ((c = getc (fd)) == '*')
{
while (((c = getc (fd)) != '\n') && (c != EOF))
;
}
}
/* eat all continuous spaces in a file */
static int
aix_fs_ignorespace (FILE *fd)
{
int c;
while ((c = aix_fs_getc (fd)) != EOF)
{
if (!g_ascii_isspace (c))
{
ungetc (c,fd);
return c;
}
}
return EOF;
}
/* read one word from file */
static int
aix_fs_getword (FILE *fd,
char *word)
{
int c;
aix_fs_ignorespace (fd);
while (((c = aix_fs_getc (fd)) != EOF) && !g_ascii_isspace (c))
{
if (c == '"')
{
while (((c = aix_fs_getc (fd)) != EOF) && (c != '"'))
*word++ = c;
else
*word++ = c;
}
}
*word = 0;
return c;
}
typedef struct {
char mnt_mount[PATH_MAX];
char mnt_special[PATH_MAX];
char mnt_fstype[16];
char mnt_options[128];
} AixMountTableEntry;
/* read mount points properties */
static int
aix_fs_get (FILE *fd,
AixMountTableEntry *prop)
{
static char word[PATH_MAX] = { 0 };
char value[PATH_MAX];
/* read stanza */
if (word[0] == 0)
{
if (aix_fs_getword (fd, word) == EOF)
return EOF;
}
word[strlen(word) - 1] = 0;
strcpy (prop->mnt_mount, word);
/* read attributes and value */
while (aix_fs_getword (fd, word) != EOF)
{
/* test if is attribute or new stanza */
if (word[strlen(word) - 1] == ':')
return 0;
/* read "=" */
aix_fs_getword (fd, value);
/* read value */
aix_fs_getword (fd, value);
if (strcmp (word, "dev") == 0)
strcpy (prop->mnt_special, value);
else if (strcmp (word, "vfs") == 0)
strcpy (prop->mnt_fstype, value);
else if (strcmp (word, "options") == 0)
strcpy(prop->mnt_options, value);
}
return 0;
}
static GList *
_g_get_unix_mount_points (void)
{
struct mntent *mntent;
FILE *file;
char *read_file;
GUnixMountPoint *mount_entry;
AixMountTableEntry mntent;
GList *return_list;
read_file = get_fstab_file ();
file = setmntent (read_file, "r");
if (file == NULL)
return NULL;
return_list = NULL;
while (!aix_fs_get (file, &mntent))
{
if (strcmp ("cdrfs", mntent.mnt_fstype) == 0)
{
mount_entry = g_new0 (GUnixMountPoint, 1);
mount_entry->mount_path = g_strdup (mntent.mnt_mount);
mount_entry->device_path = g_strdup (mntent.mnt_special);
mount_entry->filesystem_type = g_strdup (mntent.mnt_fstype);
mount_entry->options = g_strdup (mntent.mnt_options);
mount_entry->is_read_only = TRUE;
mount_entry->is_user_mountable = TRUE;
return_list = g_list_prepend (return_list, mount_entry);
}
}
endmntent (file);
return g_list_reverse (return_list);
}
#elif (defined(HAVE_GETVFSSTAT) || defined(HAVE_GETFSSTAT)) && defined(HAVE_FSTAB_H) && defined(HAVE_SYS_MOUNT_H)
static GList *
_g_get_unix_mount_points (void)
{
struct fstab *fstab = NULL;
GUnixMountPoint *mount_entry;
GList *return_list;
#ifdef HAVE_SYS_SYSCTL_H
int usermnt = 0;
size_t len = sizeof(usermnt);
struct stat sb;
#endif
if (!setfsent ())
return NULL;
return_list = NULL;
#ifdef HAVE_SYS_SYSCTL_H
#if defined(HAVE_SYSCTLBYNAME)
sysctlbyname ("vfs.usermount", &usermnt, &len, NULL, 0);
#elif defined(CTL_VFS) && defined(VFS_USERMOUNT)
{
int mib[2];
mib[0] = CTL_VFS;
mib[1] = VFS_USERMOUNT;
sysctl (mib, 2, &usermnt, &len, NULL, 0);
}
#elif defined(CTL_KERN) && defined(KERN_USERMOUNT)
{
int mib[2];
mib[0] = CTL_KERN;
mib[1] = KERN_USERMOUNT;
sysctl (mib, 2, &usermnt, &len, NULL, 0);
}
#endif
#endif
while ((fstab = getfsent ()) != NULL)
{
if (strcmp (fstab->fs_vfstype, "swap") == 0)
continue;
mount_entry = g_new0 (GUnixMountPoint, 1);
mount_entry->mount_path = g_strdup (fstab->fs_file);
mount_entry->device_path = g_strdup (fstab->fs_spec);
mount_entry->filesystem_type = g_strdup (fstab->fs_vfstype);
mount_entry->options = g_strdup (fstab->fs_mntops);
if (strcmp (fstab->fs_type, "ro") == 0)
mount_entry->is_read_only = TRUE;
#ifdef HAVE_SYS_SYSCTL_H
if (usermnt != 0)
{
uid_t uid = getuid ();
if (stat (fstab->fs_file, &sb) == 0)
{
if (uid == 0 || sb.st_uid == uid)
mount_entry->is_user_mountable = TRUE;
}
}
#endif
return_list = g_list_prepend (return_list, mount_entry);
}
endfsent ();
return g_list_reverse (return_list);
}
#elif defined(__INTERIX)
static GList *
_g_get_unix_mount_points (void)
{
return _g_get_unix_mounts ();
}
#else
#error No g_get_mount_table() implementation for system
#endif
static guint64
get_mounts_timestamp (void)
{
const char *monitor_file;
struct stat buf;
monitor_file = get_mtab_monitor_file ();
if (monitor_file)
{
if (stat (monitor_file, &buf) == 0)
return (guint64)buf.st_mtime;
}
else
{
return mount_poller_time;
}
return 0;
}
static guint64
get_mount_points_timestamp (void)
{
const char *monitor_file;
struct stat buf;
monitor_file = get_fstab_file ();
if (monitor_file)
{
if (stat (monitor_file, &buf) == 0)
return (guint64)buf.st_mtime;
}
return 0;
}
/**
* g_unix_mounts_get: (skip)
* @time_read: (out) (allow-none): guint64 to contain a timestamp, or %NULL
*
* Gets a #GList of #GUnixMountEntry containing the unix mounts.
* If @time_read is set, it will be filled with the mount
* timestamp, allowing for checking if the mounts have changed
* with g_unix_mounts_changed_since().
*
* Returns: (element-type GUnixMountEntry) (transfer full):
* a #GList of the UNIX mounts.
**/
GList *
g_unix_mounts_get (guint64 *time_read)
{
if (time_read)
*time_read = get_mounts_timestamp ();
return _g_get_unix_mounts ();
}
/**
* g_unix_mount_at: (skip)
* @mount_path: path for a possible unix mount.
* @time_read: (out) (allow-none): guint64 to contain a timestamp.
*
* Gets a #GUnixMountEntry for a given mount path. If @time_read
* is set, it will be filled with a unix timestamp for checking
* if the mounts have changed since with g_unix_mounts_changed_since().
*
* Returns: (transfer full): a #GUnixMountEntry.
**/
GUnixMountEntry *
g_unix_mount_at (const char *mount_path,
guint64 *time_read)
{
GList *mounts, *l;
GUnixMountEntry *mount_entry, *found;
mounts = g_unix_mounts_get (time_read);
found = NULL;
for (l = mounts; l != NULL; l = l->next)
{
mount_entry = l->data;
if (!found && strcmp (mount_path, mount_entry->mount_path) == 0)
found = mount_entry;
else
g_unix_mount_free (mount_entry);
}
g_list_free (mounts);
return found;
}
/**
* g_unix_mount_points_get: (skip)
* @time_read: (out) (allow-none): guint64 to contain a timestamp.
*
* Gets a #GList of #GUnixMountPoint containing the unix mount points.
* If @time_read is set, it will be filled with the mount timestamp,
* allowing for checking if the mounts have changed with
* g_unix_mount_points_changed_since().
*
* Returns: (element-type GUnixMountPoint) (transfer full):
* a #GList of the UNIX mountpoints.
**/
GList *
g_unix_mount_points_get (guint64 *time_read)
{
if (time_read)
*time_read = get_mount_points_timestamp ();
return _g_get_unix_mount_points ();
}
/**
* g_unix_mounts_changed_since:
* @time: guint64 to contain a timestamp.
*
* Checks if the unix mounts have changed since a given unix time.
*
* Returns: %TRUE if the mounts have changed since @time.
**/
gboolean
g_unix_mounts_changed_since (guint64 time)
{
return get_mounts_timestamp () != time;
}
/**
* g_unix_mount_points_changed_since:
* @time: guint64 to contain a timestamp.
*
* Checks if the unix mount points have changed since a given unix time.
*
* Returns: %TRUE if the mount points have changed since @time.
**/
gboolean
g_unix_mount_points_changed_since (guint64 time)
{
return get_mount_points_timestamp () != time;
}
static void
g_unix_mount_monitor_finalize (GObject *object)
{
GUnixMountMonitor *monitor;
monitor = G_UNIX_MOUNT_MONITOR (object);
if (monitor->fstab_monitor)
{
g_file_monitor_cancel (monitor->fstab_monitor);
g_object_unref (monitor->fstab_monitor);
}
if (monitor->proc_mounts_watch_source != NULL)
g_source_destroy (monitor->proc_mounts_watch_source);
if (monitor->mtab_monitor)
{
g_file_monitor_cancel (monitor->mtab_monitor);
g_object_unref (monitor->mtab_monitor);
}
if (monitor->mount_poller_mounts != NULL)
{
g_list_foreach (monitor->mount_poller_mounts, (GFunc)g_unix_mount_free, NULL);
g_list_free (monitor->mount_poller_mounts);
}
the_mount_monitor = NULL;
G_OBJECT_CLASS (g_unix_mount_monitor_parent_class)->finalize (object);
}
static void
g_unix_mount_monitor_class_init (GUnixMountMonitorClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = g_unix_mount_monitor_finalize;
/**
* GUnixMountMonitor::mounts-changed:
* @monitor: the object on which the signal is emitted
*
* Emitted when the unix mounts have changed.
*/
signals[MOUNTS_CHANGED] =
g_signal_new ("mounts-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GUnixMountMonitor::mountpoints-changed:
* @monitor: the object on which the signal is emitted
*
* Emitted when the unix mount points have changed.
*/
signals[MOUNTPOINTS_CHANGED] =
g_signal_new ("mountpoints-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void
fstab_file_changed (GFileMonitor *monitor,
GFile *file,
GFile *other_file,
GFileMonitorEvent event_type,
gpointer user_data)
{
GUnixMountMonitor *mount_monitor;
if (event_type != G_FILE_MONITOR_EVENT_CHANGED &&
event_type != G_FILE_MONITOR_EVENT_CREATED &&
event_type != G_FILE_MONITOR_EVENT_DELETED)
return;
mount_monitor = user_data;
g_signal_emit (mount_monitor, signals[MOUNTPOINTS_CHANGED], 0);
}
static void
mtab_file_changed (GFileMonitor *monitor,
GFile *file,
GFile *other_file,
GFileMonitorEvent event_type,
gpointer user_data)
{
GUnixMountMonitor *mount_monitor;
if (event_type != G_FILE_MONITOR_EVENT_CHANGED &&
event_type != G_FILE_MONITOR_EVENT_CREATED &&
event_type != G_FILE_MONITOR_EVENT_DELETED)
return;
mount_monitor = user_data;
g_signal_emit (mount_monitor, signals[MOUNTS_CHANGED], 0);
}
static gboolean
proc_mounts_changed (GIOChannel *channel,
GIOCondition cond,
gpointer user_data)
{
GUnixMountMonitor *mount_monitor = G_UNIX_MOUNT_MONITOR (user_data);
if (cond & G_IO_ERR)
g_signal_emit (mount_monitor, signals[MOUNTS_CHANGED], 0);
return TRUE;
}
static gboolean
mount_change_poller (gpointer user_data)
{
GUnixMountMonitor *mount_monitor;
GList *current_mounts;
gboolean has_changed = FALSE;
mount_monitor = user_data;
current_mounts = _g_get_unix_mounts ();
if (g_list_length (current_mounts) != g_list_length (mount_monitor->mount_poller_mounts))
{
g_list_foreach (mount_monitor->mount_poller_mounts, (GFunc)g_unix_mount_free, NULL);
has_changed = TRUE;
}
else
{
int i;
for (i = 0; i < g_list_length (current_mounts); i++)
{
GUnixMountEntry *m1;
GUnixMountEntry *m2;
m1 = (GUnixMountEntry *)g_list_nth_data (current_mounts, i);
m2 = (GUnixMountEntry *)g_list_nth_data (mount_monitor->mount_poller_mounts, i);
if (! has_changed && g_unix_mount_compare (m1, m2) != 0)
has_changed = TRUE;
g_unix_mount_free (m2);
}
}
g_list_free (mount_monitor->mount_poller_mounts);
mount_monitor->mount_poller_mounts = current_mounts;
if (has_changed)
{
mount_poller_time = (guint64)time (NULL);
g_signal_emit (mount_monitor, signals[MOUNTS_CHANGED], 0);
}
return TRUE;
}
static void
g_unix_mount_monitor_init (GUnixMountMonitor *monitor)
{
GFile *file;
if (get_fstab_file () != NULL)
{
file = g_file_new_for_path (get_fstab_file ());
monitor->fstab_monitor = g_file_monitor_file (file, 0, NULL, NULL);
g_object_unref (file);
g_signal_connect (monitor->fstab_monitor, "changed", (GCallback)fstab_file_changed, monitor);
}
if (get_mtab_monitor_file () != NULL)
{
const gchar *mtab_path;
mtab_path = get_mtab_monitor_file ();
/* /proc/mounts monitoring is special - can't just use GFileMonitor.
* See 'man proc' for more details.
*/
if (g_strcmp0 (mtab_path, "/proc/mounts") == 0)
{
GIOChannel *proc_mounts_channel;
GError *error = NULL;
proc_mounts_channel = g_io_channel_new_file ("/proc/mounts", "r", &error);
if (proc_mounts_channel == NULL)
{
g_warning ("Error creating IO channel for /proc/mounts: %s (%s, %d)",
error->message, g_quark_to_string (error->domain), error->code);
g_error_free (error);
}
else
{
monitor->proc_mounts_watch_source = g_io_create_watch (proc_mounts_channel, G_IO_ERR);
g_source_set_callback (monitor->proc_mounts_watch_source,
(GSourceFunc) proc_mounts_changed,
monitor,
NULL);
g_source_attach (monitor->proc_mounts_watch_source,
g_main_context_get_thread_default ());
g_source_unref (monitor->proc_mounts_watch_source);
g_io_channel_unref (proc_mounts_channel);
}
}
else
{
file = g_file_new_for_path (mtab_path);
monitor->mtab_monitor = g_file_monitor_file (file, 0, NULL, NULL);
g_object_unref (file);
g_signal_connect (monitor->mtab_monitor, "changed", (GCallback)mtab_file_changed, monitor);
}
}
else
{
monitor->proc_mounts_watch_source = g_timeout_source_new_seconds (3);
monitor->mount_poller_mounts = _g_get_unix_mounts ();
mount_poller_time = (guint64)time (NULL);
g_source_set_callback (monitor->proc_mounts_watch_source,
(GSourceFunc)mount_change_poller,
monitor, NULL);
g_source_attach (monitor->proc_mounts_watch_source,
g_main_context_get_thread_default ());
g_source_unref (monitor->proc_mounts_watch_source);
}
}
/**
* g_unix_mount_monitor_set_rate_limit:
* @mount_monitor: a #GUnixMountMonitor
* @limit_msec: a integer with the limit in milliseconds to
* poll for changes.
*
* Sets the rate limit to which the @mount_monitor will report
* consecutive change events to the mount and mount point entry files.
*
* Since: 2.18
*/
void
g_unix_mount_monitor_set_rate_limit (GUnixMountMonitor *mount_monitor,
gint limit_msec)
{
g_return_if_fail (G_IS_UNIX_MOUNT_MONITOR (mount_monitor));
if (mount_monitor->fstab_monitor != NULL)
g_file_monitor_set_rate_limit (mount_monitor->fstab_monitor, limit_msec);
if (mount_monitor->mtab_monitor != NULL)
g_file_monitor_set_rate_limit (mount_monitor->mtab_monitor, limit_msec);
}
/**
* g_unix_mount_monitor_new:
*
* Gets a new #GUnixMountMonitor. The default rate limit for which the
* monitor will report consecutive changes for the mount and mount
* point entry files is the default for a #GFileMonitor. Use
* g_unix_mount_monitor_set_rate_limit() to change this.
*
* Returns: a #GUnixMountMonitor.
*/
GUnixMountMonitor *
g_unix_mount_monitor_new (void)
{
if (the_mount_monitor == NULL)
{
the_mount_monitor = g_object_new (G_TYPE_UNIX_MOUNT_MONITOR, NULL);
return the_mount_monitor;
}
return g_object_ref (the_mount_monitor);
}
/**
* g_unix_mount_free:
* @mount_entry: a #GUnixMountEntry.
*
* Frees a unix mount.
*/
void
g_unix_mount_free (GUnixMountEntry *mount_entry)
{
g_return_if_fail (mount_entry != NULL);
g_free (mount_entry->mount_path);
g_free (mount_entry->device_path);
g_free (mount_entry->filesystem_type);
g_free (mount_entry);
}
/**
* g_unix_mount_point_free:
* @mount_point: unix mount point to free.
*
* Frees a unix mount point.
*/
void
g_unix_mount_point_free (GUnixMountPoint *mount_point)
{
g_return_if_fail (mount_point != NULL);
g_free (mount_point->mount_path);
g_free (mount_point->device_path);
g_free (mount_point->filesystem_type);
g_free (mount_point->options);
g_free (mount_point);
}
/**
* g_unix_mount_compare:
* @mount1: first #GUnixMountEntry to compare.
* @mount2: second #GUnixMountEntry to compare.
*
* Compares two unix mounts.
*
* Returns: 1, 0 or -1 if @mount1 is greater than, equal to,
* or less than @mount2, respectively.
*/
gint
g_unix_mount_compare (GUnixMountEntry *mount1,
GUnixMountEntry *mount2)
{
int res;
g_return_val_if_fail (mount1 != NULL && mount2 != NULL, 0);
res = g_strcmp0 (mount1->mount_path, mount2->mount_path);
if (res != 0)
return res;
res = g_strcmp0 (mount1->device_path, mount2->device_path);
if (res != 0)
return res;
res = g_strcmp0 (mount1->filesystem_type, mount2->filesystem_type);
if (res != 0)
return res;
res = mount1->is_read_only - mount2->is_read_only;
if (res != 0)
return res;
return 0;
}
/**
* g_unix_mount_get_mount_path:
* @mount_entry: input #GUnixMountEntry to get the mount path for.
*
* Gets the mount path for a unix mount.
*
* Returns: the mount path for @mount_entry.
*/
const gchar *
g_unix_mount_get_mount_path (GUnixMountEntry *mount_entry)
{
g_return_val_if_fail (mount_entry != NULL, NULL);
return mount_entry->mount_path;
}
/**
* g_unix_mount_get_device_path:
* @mount_entry: a #GUnixMount.
*
* Gets the device path for a unix mount.
*
* Returns: a string containing the device path.
*/
const gchar *
g_unix_mount_get_device_path (GUnixMountEntry *mount_entry)
{
g_return_val_if_fail (mount_entry != NULL, NULL);
return mount_entry->device_path;
}
/**
* g_unix_mount_get_fs_type:
* @mount_entry: a #GUnixMount.
*
* Gets the filesystem type for the unix mount.
*
* Returns: a string containing the file system type.
*/
const gchar *
g_unix_mount_get_fs_type (GUnixMountEntry *mount_entry)
{
g_return_val_if_fail (mount_entry != NULL, NULL);
return mount_entry->filesystem_type;
}
/**
* g_unix_mount_is_readonly:
* @mount_entry: a #GUnixMount.
*
* Checks if a unix mount is mounted read only.
*
* Returns: %TRUE if @mount_entry is read only.
*/
gboolean
g_unix_mount_is_readonly (GUnixMountEntry *mount_entry)
{
g_return_val_if_fail (mount_entry != NULL, FALSE);
return mount_entry->is_read_only;
}
/**
* g_unix_mount_is_system_internal:
* @mount_entry: a #GUnixMount.
*
* Checks if a unix mount is a system path.
*
* Returns: %TRUE if the unix mount is for a system path.
*/
gboolean
g_unix_mount_is_system_internal (GUnixMountEntry *mount_entry)
{
g_return_val_if_fail (mount_entry != NULL, FALSE);
return mount_entry->is_system_internal;
}
/**
* g_unix_mount_point_compare:
* @mount1: a #GUnixMount.
* @mount2: a #GUnixMount.
*
* Compares two unix mount points.
*
* Returns: 1, 0 or -1 if @mount1 is greater than, equal to,
* or less than @mount2, respectively.
*/
gint
g_unix_mount_point_compare (GUnixMountPoint *mount1,
GUnixMountPoint *mount2)
{
int res;
g_return_val_if_fail (mount1 != NULL && mount2 != NULL, 0);
res = g_strcmp0 (mount1->mount_path, mount2->mount_path);
if (res != 0)
return res;
res = g_strcmp0 (mount1->device_path, mount2->device_path);
if (res != 0)
return res;
res = g_strcmp0 (mount1->filesystem_type, mount2->filesystem_type);
if (res != 0)
return res;
res = g_strcmp0 (mount1->options, mount2->options);
if (res != 0)
return res;
res = mount1->is_read_only - mount2->is_read_only;
if (res != 0)
return res;
res = mount1->is_user_mountable - mount2->is_user_mountable;
if (res != 0)
return res;
res = mount1->is_loopback - mount2->is_loopback;
if (res != 0)
return res;
return 0;
}
/**
* g_unix_mount_point_get_mount_path:
* @mount_point: a #GUnixMountPoint.
*
* Gets the mount path for a unix mount point.
*
* Returns: a string containing the mount path.
*/
const gchar *
g_unix_mount_point_get_mount_path (GUnixMountPoint *mount_point)
{
g_return_val_if_fail (mount_point != NULL, NULL);
return mount_point->mount_path;
}
/**
* g_unix_mount_point_get_device_path:
* @mount_point: a #GUnixMountPoint.
*
* Gets the device path for a unix mount point.
*
* Returns: a string containing the device path.
*/
const gchar *
g_unix_mount_point_get_device_path (GUnixMountPoint *mount_point)
{
g_return_val_if_fail (mount_point != NULL, NULL);
return mount_point->device_path;
}
/**
* g_unix_mount_point_get_fs_type:
* @mount_point: a #GUnixMountPoint.
*
* Gets the file system type for the mount point.
*
* Returns: a string containing the file system type.
*/
const gchar *
g_unix_mount_point_get_fs_type (GUnixMountPoint *mount_point)
{
g_return_val_if_fail (mount_point != NULL, NULL);
return mount_point->filesystem_type;
}
/**
* g_unix_mount_point_get_options:
* @mount_point: a #GUnixMountPoint.
*
* Gets the options for the mount point.
*
* Returns: a string containing the options.
*
* Since: 2.32
*/
const gchar *
g_unix_mount_point_get_options (GUnixMountPoint *mount_point)
{
g_return_val_if_fail (mount_point != NULL, NULL);
return mount_point->options;
}
/**
* g_unix_mount_point_is_readonly:
* @mount_point: a #GUnixMountPoint.
*
* Checks if a unix mount point is read only.
*
* Returns: %TRUE if a mount point is read only.
*/
gboolean
g_unix_mount_point_is_readonly (GUnixMountPoint *mount_point)
{
g_return_val_if_fail (mount_point != NULL, FALSE);
return mount_point->is_read_only;
}
/**
* g_unix_mount_point_is_user_mountable:
* @mount_point: a #GUnixMountPoint.
*
* Checks if a unix mount point is mountable by the user.
*
* Returns: %TRUE if the mount point is user mountable.
*/
gboolean
g_unix_mount_point_is_user_mountable (GUnixMountPoint *mount_point)
{
g_return_val_if_fail (mount_point != NULL, FALSE);
return mount_point->is_user_mountable;
}
/**
* g_unix_mount_point_is_loopback:
* @mount_point: a #GUnixMountPoint.
*
* Checks if a unix mount point is a loopback device.
*
* Returns: %TRUE if the mount point is a loopback. %FALSE otherwise.
*/
gboolean
g_unix_mount_point_is_loopback (GUnixMountPoint *mount_point)
{
g_return_val_if_fail (mount_point != NULL, FALSE);
return mount_point->is_loopback;
}
static GUnixMountType
guess_mount_type (const char *mount_path,
const char *device_path,
const char *filesystem_type)
{
GUnixMountType type;
char *basename;
type = G_UNIX_MOUNT_TYPE_UNKNOWN;
if ((strcmp (filesystem_type, "udf") == 0) ||
(strcmp (filesystem_type, "iso9660") == 0) ||
(strcmp (filesystem_type, "cd9660") == 0))
type = G_UNIX_MOUNT_TYPE_CDROM;
else if ((strcmp (filesystem_type, "nfs") == 0) ||
(strcmp (filesystem_type, "nfs4") == 0))
type = G_UNIX_MOUNT_TYPE_NFS;
else if (g_str_has_prefix (device_path, "/vol/dev/diskette/") ||
g_str_has_prefix (device_path, "/dev/fd") ||
g_str_has_prefix (device_path, "/dev/floppy"))
type = G_UNIX_MOUNT_TYPE_FLOPPY;
else if (g_str_has_prefix (device_path, "/dev/cdrom") ||
g_str_has_prefix (device_path, "/dev/acd") ||
g_str_has_prefix (device_path, "/dev/cd"))
type = G_UNIX_MOUNT_TYPE_CDROM;
else if (g_str_has_prefix (device_path, "/vol/"))
{
const char *name = mount_path + strlen ("/");
if (g_str_has_prefix (name, "cdrom"))
type = G_UNIX_MOUNT_TYPE_CDROM;
else if (g_str_has_prefix (name, "floppy") ||
g_str_has_prefix (device_path, "/vol/dev/diskette/"))
type = G_UNIX_MOUNT_TYPE_FLOPPY;
else if (g_str_has_prefix (name, "rmdisk"))
type = G_UNIX_MOUNT_TYPE_ZIP;
else if (g_str_has_prefix (name, "jaz"))
type = G_UNIX_MOUNT_TYPE_JAZ;
else if (g_str_has_prefix (name, "memstick"))
type = G_UNIX_MOUNT_TYPE_MEMSTICK;
}
else
{
basename = g_path_get_basename (mount_path);
if (g_str_has_prefix (basename, "cdr") ||
g_str_has_prefix (basename, "cdwriter") ||
g_str_has_prefix (basename, "burn") ||
g_str_has_prefix (basename, "dvdr"))
type = G_UNIX_MOUNT_TYPE_CDROM;
else if (g_str_has_prefix (basename, "floppy"))
type = G_UNIX_MOUNT_TYPE_FLOPPY;
else if (g_str_has_prefix (basename, "zip"))
type = G_UNIX_MOUNT_TYPE_ZIP;
else if (g_str_has_prefix (basename, "jaz"))
type = G_UNIX_MOUNT_TYPE_JAZ;
else if (g_str_has_prefix (basename, "camera"))
type = G_UNIX_MOUNT_TYPE_CAMERA;
else if (g_str_has_prefix (basename, "memstick") ||
g_str_has_prefix (basename, "memory_stick") ||
g_str_has_prefix (basename, "ram"))
type = G_UNIX_MOUNT_TYPE_MEMSTICK;
else if (g_str_has_prefix (basename, "compact_flash"))
type = G_UNIX_MOUNT_TYPE_CF;
else if (g_str_has_prefix (basename, "smart_media"))
type = G_UNIX_MOUNT_TYPE_SM;
else if (g_str_has_prefix (basename, "sd_mmc"))
type = G_UNIX_MOUNT_TYPE_SDMMC;
else if (g_str_has_prefix (basename, "ipod"))
type = G_UNIX_MOUNT_TYPE_IPOD;
g_free (basename);
}
if (type == G_UNIX_MOUNT_TYPE_UNKNOWN)
type = G_UNIX_MOUNT_TYPE_HD;
return type;
}
/**
* g_unix_mount_guess_type:
* @mount_entry: a #GUnixMount.
*
* Guesses the type of a unix mount. If the mount type cannot be
* determined, returns %G_UNIX_MOUNT_TYPE_UNKNOWN.
*
* Returns: a #GUnixMountType.
*/
static GUnixMountType
g_unix_mount_guess_type (GUnixMountEntry *mount_entry)
{
g_return_val_if_fail (mount_entry != NULL, G_UNIX_MOUNT_TYPE_UNKNOWN);
g_return_val_if_fail (mount_entry->mount_path != NULL, G_UNIX_MOUNT_TYPE_UNKNOWN);
g_return_val_if_fail (mount_entry->device_path != NULL, G_UNIX_MOUNT_TYPE_UNKNOWN);
g_return_val_if_fail (mount_entry->filesystem_type != NULL, G_UNIX_MOUNT_TYPE_UNKNOWN);
return guess_mount_type (mount_entry->mount_path,
mount_entry->device_path,
mount_entry->filesystem_type);
}
/**
* g_unix_mount_point_guess_type:
* @mount_point: a #GUnixMountPoint.
*
* Guesses the type of a unix mount point.
* If the mount type cannot be determined,
* returns %G_UNIX_MOUNT_TYPE_UNKNOWN.
*
* Returns: a #GUnixMountType.
*/
static GUnixMountType
g_unix_mount_point_guess_type (GUnixMountPoint *mount_point)
{
g_return_val_if_fail (mount_point != NULL, G_UNIX_MOUNT_TYPE_UNKNOWN);
g_return_val_if_fail (mount_point->mount_path != NULL, G_UNIX_MOUNT_TYPE_UNKNOWN);
g_return_val_if_fail (mount_point->device_path != NULL, G_UNIX_MOUNT_TYPE_UNKNOWN);
g_return_val_if_fail (mount_point->filesystem_type != NULL, G_UNIX_MOUNT_TYPE_UNKNOWN);
return guess_mount_type (mount_point->mount_path,
mount_point->device_path,
mount_point->filesystem_type);
}
static const char *
type_to_icon (GUnixMountType type, gboolean is_mount_point, gboolean use_symbolic)
{
const char *icon_name;
switch (type)
{
case G_UNIX_MOUNT_TYPE_HD:
if (is_mount_point)
icon_name = use_symbolic ? "drive-removable-media-symbolic" : "drive-removable-media";
else
icon_name = use_symbolic ? "drive-harddisk-symbolic" : "drive-harddisk";
break;
case G_UNIX_MOUNT_TYPE_FLOPPY:
case G_UNIX_MOUNT_TYPE_ZIP:
case G_UNIX_MOUNT_TYPE_JAZ:
if (is_mount_point)
icon_name = use_symbolic ? "drive-removable-media-symbolic" : "drive-removable-media";
else
icon_name = use_symbolic ? "media-removable-symbolic" : "media-floppy";
break;
case G_UNIX_MOUNT_TYPE_CDROM:
if (is_mount_point)
icon_name = use_symbolic ? "drive-optical-symbolic" : "drive-optical";
else
icon_name = use_symbolic ? "media-optical-symbolic" : "media-optical";
break;
case G_UNIX_MOUNT_TYPE_NFS:
icon_name = use_symbolic ? "folder-remote-symbolic" : "folder-remote";
break;
case G_UNIX_MOUNT_TYPE_MEMSTICK:
if (is_mount_point)
icon_name = use_symbolic ? "drive-removable-media-symbolic" : "drive-removable-media";
else
icon_name = use_symbolic ? "media-removable-symbolic" : "media-flash";
break;
case G_UNIX_MOUNT_TYPE_CAMERA:
if (is_mount_point)
icon_name = use_symbolic ? "drive-removable-media-symbolic" : "drive-removable-media";
else
icon_name = use_symbolic ? "camera-photo-symbolic" : "camera-photo";
break;
case G_UNIX_MOUNT_TYPE_IPOD:
if (is_mount_point)
icon_name = use_symbolic ? "drive-removable-media-symbolic" : "drive-removable-media";
else
icon_name = use_symbolic ? "multimedia-player-symbolic" : "multimedia-player";
break;
case G_UNIX_MOUNT_TYPE_UNKNOWN:
default:
if (is_mount_point)
icon_name = use_symbolic ? "drive-removable-media-symbolic" : "drive-removable-media";
else
icon_name = use_symbolic ? "drive-harddisk-symbolic" : "drive-harddisk";
break;
}
return icon_name;
}
/**
* g_unix_mount_guess_name:
* @mount_entry: a #GUnixMountEntry
*
* Guesses the name of a Unix mount.
* The result is a translated string.
*
* Returns: A newly allocated string that must
* be freed with g_free()
*/
gchar *
g_unix_mount_guess_name (GUnixMountEntry *mount_entry)
{
char *name;
if (strcmp (mount_entry->mount_path, "/") == 0)
name = g_strdup (_("Filesystem root"));
else
name = g_filename_display_basename (mount_entry->mount_path);
return name;
}
/**
* g_unix_mount_guess_icon:
* @mount_entry: a #GUnixMountEntry
*
* Guesses the icon of a Unix mount.
*
* Returns: (transfer full): a #GIcon
*/
GIcon *
g_unix_mount_guess_icon (GUnixMountEntry *mount_entry)
{
return g_themed_icon_new_with_default_fallbacks (type_to_icon (g_unix_mount_guess_type (mount_entry), FALSE, FALSE));
}
/**
* g_unix_mount_guess_symbolic_icon:
* @mount_entry: a #GUnixMountEntry
*
* Guesses the symbolic icon of a Unix mount.
*
* Returns: (transfer full): a #GIcon
*
* Since: 2.34
*/
GIcon *
g_unix_mount_guess_symbolic_icon (GUnixMountEntry *mount_entry)
{
return g_themed_icon_new_with_default_fallbacks (type_to_icon (g_unix_mount_guess_type (mount_entry), FALSE, TRUE));
}
/**
* g_unix_mount_point_guess_name:
* @mount_point: a #GUnixMountPoint
*
* Guesses the name of a Unix mount point.
* The result is a translated string.
*
* Returns: A newly allocated string that must
* be freed with g_free()
*/
gchar *
g_unix_mount_point_guess_name (GUnixMountPoint *mount_point)
{
char *name;
if (strcmp (mount_point->mount_path, "/") == 0)
name = g_strdup (_("Filesystem root"));
else
name = g_filename_display_basename (mount_point->mount_path);
return name;
}
/**
* g_unix_mount_point_guess_icon:
* @mount_point: a #GUnixMountPoint
*
* Guesses the icon of a Unix mount point.
*
* Returns: (transfer full): a #GIcon
*/
GIcon *
g_unix_mount_point_guess_icon (GUnixMountPoint *mount_point)
{
return g_themed_icon_new_with_default_fallbacks (type_to_icon (g_unix_mount_point_guess_type (mount_point), TRUE, FALSE));
}
/**
* g_unix_mount_point_guess_symbolic_icon:
* @mount_point: a #GUnixMountPoint
*
* Guesses the symbolic icon of a Unix mount point.
*
* Returns: (transfer full): a #GIcon
*
* Since: 2.34
*/
GIcon *
g_unix_mount_point_guess_symbolic_icon (GUnixMountPoint *mount_point)
{
return g_themed_icon_new_with_default_fallbacks (type_to_icon (g_unix_mount_point_guess_type (mount_point), TRUE, TRUE));
}
/**
* g_unix_mount_guess_can_eject:
* @mount_entry: a #GUnixMountEntry
*
* Guesses whether a Unix mount can be ejected.
*
* Returns: %TRUE if @mount_entry is deemed to be ejectable.
*/
gboolean
g_unix_mount_guess_can_eject (GUnixMountEntry *mount_entry)
{
GUnixMountType guessed_type;
guessed_type = g_unix_mount_guess_type (mount_entry);
if (guessed_type == G_UNIX_MOUNT_TYPE_IPOD ||
guessed_type == G_UNIX_MOUNT_TYPE_CDROM)
return TRUE;
return FALSE;
}
/**
* g_unix_mount_guess_should_display:
* @mount_entry: a #GUnixMountEntry
*
* Guesses whether a Unix mount should be displayed in the UI.
*
* Returns: %TRUE if @mount_entry is deemed to be displayable.
*/
gboolean
g_unix_mount_guess_should_display (GUnixMountEntry *mount_entry)
{
const char *mount_path;
const gchar *user_name;
gsize user_name_len;
/* Never display internal mountpoints */
if (g_unix_mount_is_system_internal (mount_entry))
return FALSE;
/* Only display things in /media (which are generally user mountable)
and home dir (fuse stuff) and /run/media/$USER */
mount_path = mount_entry->mount_path;
if (mount_path != NULL)
{
gboolean is_in_runtime_dir = FALSE;
/* Hide mounts within a dot path, suppose it was a purpose to hide this mount */
if (g_strstr_len (mount_path, -1, "/.") != NULL)
return FALSE;
/* Check /run/media/$USER/ */
user_name = g_get_user_name ();
user_name_len = strlen (user_name);
if (strncmp (mount_path, "/run/media/", sizeof ("/run/media/") - 1) == 0 &&
strncmp (mount_path + sizeof ("/run/media/") - 1, user_name, user_name_len) == 0 &&
mount_path[sizeof ("/run/media/") - 1 + user_name_len] == '/')
is_in_runtime_dir = TRUE;
if (is_in_runtime_dir || g_str_has_prefix (mount_path, "/media/"))
{
char *path;
/* Avoid displaying mounts that are not accessible to the user.
*
* See http://bugzilla.gnome.org/show_bug.cgi?id=526320 for why we
* want to avoid g_access() for mount points which can potentially
* block or fail stat()'ing, such as network mounts.
*/
path = g_path_get_dirname (mount_path);
if (g_str_has_prefix (path, "/media/"))
{
if (g_access (path, R_OK|X_OK) != 0)
{
g_free (path);
return FALSE;
}
}
g_free (path);
if (mount_entry->device_path && mount_entry->device_path[0] == '/')
{
struct stat st;
if (g_stat (mount_entry->device_path, &st) == 0 &&
S_ISBLK(st.st_mode) &&
g_access (mount_path, R_OK|X_OK) != 0)
return FALSE;
}
return TRUE;
}
if (g_str_has_prefix (mount_path, g_get_home_dir ()) &&
mount_path[strlen (g_get_home_dir())] == G_DIR_SEPARATOR)
return TRUE;
}
return FALSE;
}
/**
* g_unix_mount_point_guess_can_eject:
* @mount_point: a #GUnixMountPoint
*
* Guesses whether a Unix mount point can be ejected.
*
* Returns: %TRUE if @mount_point is deemed to be ejectable.
*/
gboolean
g_unix_mount_point_guess_can_eject (GUnixMountPoint *mount_point)
{
GUnixMountType guessed_type;
guessed_type = g_unix_mount_point_guess_type (mount_point);
if (guessed_type == G_UNIX_MOUNT_TYPE_IPOD ||
guessed_type == G_UNIX_MOUNT_TYPE_CDROM)
return TRUE;
return FALSE;
}
#ifdef HAVE_MNTENT_H
/* borrowed from gtk/gtkfilesystemunix.c in GTK+ on 02/23/2006 */
static void
_canonicalize_filename (gchar *filename)
{
gchar *p, *q;
gboolean last_was_slash = FALSE;
p = filename;
q = filename;
while (*p)
{
if (*p == G_DIR_SEPARATOR)
{
if (!last_was_slash)
*q++ = G_DIR_SEPARATOR;
last_was_slash = TRUE;
}
else
{
if (last_was_slash && *p == '.')
{
if (*(p + 1) == G_DIR_SEPARATOR ||
*(p + 1) == '\0')
{
if (*(p + 1) == '\0')
break;
p += 1;
}
else if (*(p + 1) == '.' &&
(*(p + 2) == G_DIR_SEPARATOR ||
*(p + 2) == '\0'))
{
if (q > filename + 1)
{
q--;
while (q > filename + 1 &&
*(q - 1) != G_DIR_SEPARATOR)
q--;
}
if (*(p + 2) == '\0')
break;
p += 2;
}
else
{
*q++ = *p;
last_was_slash = FALSE;
}
}
else
{
*q++ = *p;
last_was_slash = FALSE;
}
}
p++;
}
if (q > filename + 1 && *(q - 1) == G_DIR_SEPARATOR)
q--;
*q = '\0';
}
static char *
_resolve_symlink (const char *file)
{
GError *error;
char *dir;
char *link;
char *f;
char *f1;
f = g_strdup (file);
while (g_file_test (f, G_FILE_TEST_IS_SYMLINK))
{
link = g_file_read_link (f, &error);
if (link == NULL)
{
g_error_free (error);
g_free (f);
f = NULL;
goto out;
}
dir = g_path_get_dirname (f);
f1 = g_strdup_printf ("%s/%s", dir, link);
g_free (dir);
g_free (link);
g_free (f);
f = f1;
}
out:
if (f != NULL)
_canonicalize_filename (f);
return f;
}
static const char *
_resolve_dev_root (void)
{
static gboolean have_real_dev_root = FALSE;
static char real_dev_root[256];
struct stat statbuf;
/* see if it's cached already */
if (have_real_dev_root)
goto found;
/* otherwise we're going to find it right away.. */
have_real_dev_root = TRUE;
if (stat ("/dev/root", &statbuf) == 0)
{
if (! S_ISLNK (statbuf.st_mode))
{
dev_t root_dev = statbuf.st_dev;
FILE *f;
/* see if device with similar major:minor as /dev/root is mention
* in /etc/mtab (it usually is)
*/
f = fopen ("/etc/mtab", "r");
if (f != NULL)
{
struct mntent *entp;
#ifdef HAVE_GETMNTENT_R
struct mntent ent;
char buf[1024];
while ((entp = getmntent_r (f, &ent, buf, sizeof (buf))) != NULL)
{
#else
G_LOCK (getmntent);
while ((entp = getmntent (f)) != NULL)
{
#endif
if (stat (entp->mnt_fsname, &statbuf) == 0 &&
statbuf.st_dev == root_dev)
{
strncpy (real_dev_root, entp->mnt_fsname, sizeof (real_dev_root) - 1);
real_dev_root[sizeof (real_dev_root) - 1] = '\0';
fclose (f);
goto found;
}
}
endmntent (f);
#ifndef HAVE_GETMNTENT_R
G_UNLOCK (getmntent);
#endif
}
/* no, that didn't work.. next we could scan /dev ... but I digress.. */
}
else
{
char *resolved;
resolved = _resolve_symlink ("/dev/root");
if (resolved != NULL)
{
strncpy (real_dev_root, resolved, sizeof (real_dev_root) - 1);
real_dev_root[sizeof (real_dev_root) - 1] = '\0';
g_free (resolved);
goto found;
}
}
}
/* bah sucks.. */
strcpy (real_dev_root, "/dev/root");
found:
return real_dev_root;
}
#endif
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