diff options
Diffstat (limited to 'src/filemanager/mountlist.c')
| -rw-r--r-- | src/filemanager/mountlist.c | 1575 |
1 files changed, 1575 insertions, 0 deletions
diff --git a/src/filemanager/mountlist.c b/src/filemanager/mountlist.c new file mode 100644 index 0000000..d7fd734 --- /dev/null +++ b/src/filemanager/mountlist.c @@ -0,0 +1,1575 @@ +/* + Return a list of mounted file systems + + Copyright (C) 1991-2023 + Free Software Foundation, Inc. + + This file is part of the Midnight Commander. + + The Midnight Commander 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 3 of the License, + or (at your option) any later version. + + The Midnight Commander 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, see <http://www.gnu.org/licenses/>. + */ + +/** \file mountlist.c + * \brief Source: list of mounted filesystems + */ + +#include <config.h> + +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdint.h> /* SIZE_MAX */ +#include <sys/types.h> + +#include <errno.h> + +/* This header needs to be included before sys/mount.h on *BSD */ +#ifdef HAVE_SYS_PARAM_H +#include <sys/param.h> +#endif + +#if defined STAT_STATVFS || defined STAT_STATVFS64 /* POSIX 1003.1-2001 (and later) with XSI */ +#include <sys/statvfs.h> +#else +/* Don't include backward-compatibility files unless they're needed. + Eventually we'd like to remove all this cruft. */ +#include <fcntl.h> +#include <unistd.h> +#include <sys/stat.h> + +#ifdef MOUNTED_GETFSSTAT /* OSF_1, also (obsolete) Apple Darwin 1.3 */ +#ifdef HAVE_SYS_UCRED_H +#include <grp.h> /* needed on OSF V4.0 for definition of NGROUPS, + NGROUPS is used as an array dimension in ucred.h */ +#include <sys/ucred.h> /* needed by powerpc-apple-darwin1.3.7 */ +#endif +#ifdef HAVE_SYS_MOUNT_H +#include <sys/mount.h> +#endif +#ifdef HAVE_SYS_FS_TYPES_H +#include <sys/fs_types.h> /* needed by powerpc-apple-darwin1.3.7 */ +#endif +#ifdef HAVE_STRUCT_FSSTAT_F_FSTYPENAME +#define FS_TYPE(Ent) ((Ent).f_fstypename) +#else +#define FS_TYPE(Ent) mnt_names[(Ent).f_type] +#endif +#endif /* MOUNTED_GETFSSTAT */ +#endif /* STAT_STATVFS || STAT_STATVFS64 */ + +#ifdef HAVE_SYS_VFS_H +#include <sys/vfs.h> +#endif +#ifdef HAVE_SYS_FS_S5PARAM_H /* Fujitsu UXP/V */ +#include <sys/fs/s5param.h> +#endif +#ifdef HAVE_SYS_STATFS_H +#include <sys/statfs.h> +#endif + +#ifdef MOUNTED_GETMNTENT1 /* glibc, HP-UX, IRIX, Cygwin, Android, + also (obsolete) 4.3BSD, SunOS */ +#include <mntent.h> +#include <sys/types.h> +#if defined __ANDROID__ /* Android */ + /* Bionic versions from between 2014-01-09 and 2015-01-08 define MOUNTED to + an incorrect value; older Bionic versions don't define it at all. */ +#undef MOUNTED +#define MOUNTED "/proc/mounts" +#elif !defined MOUNTED +#ifdef _PATH_MOUNTED /* GNU libc */ +#define MOUNTED _PATH_MOUNTED +#endif +#ifdef MNT_MNTTAB /* HP-UX. */ +#define MOUNTED MNT_MNTTAB +#endif +#endif +#endif + +#ifdef MOUNTED_GETMNTINFO /* Mac OS X, FreeBSD, OpenBSD, also (obsolete) 4.4BSD */ +#include <sys/mount.h> +#endif + +#ifdef MOUNTED_GETMNTINFO2 /* NetBSD, Minix */ +#include <sys/statvfs.h> +#endif + +#ifdef MOUNTED_FS_STAT_DEV /* Haiku, also (obsolete) BeOS */ +#include <fs_info.h> +#include <dirent.h> +#endif + +#ifdef MOUNTED_FREAD_FSTYP /* (obsolete) SVR3 */ +#include <mnttab.h> +#include <sys/fstyp.h> +#include <sys/statfs.h> +#endif + +#ifdef MOUNTED_GETEXTMNTENT /* Solaris >= 8 */ +#include <sys/mnttab.h> +#endif + +#ifdef MOUNTED_GETMNTENT2 /* Solaris < 8, also (obsolete) SVR4 */ +#include <sys/mnttab.h> +#endif + +#ifdef MOUNTED_VMOUNT /* AIX */ +#include <fshelp.h> +#include <sys/vfs.h> +#endif + +#ifdef MOUNTED_INTERIX_STATVFS /* Interix */ +#include <sys/statvfs.h> +#include <dirent.h> +#endif + +#ifdef HAVE_SYS_MNTENT_H +/* This is to get MNTOPT_IGNORE on e.g. SVR4. */ +#include <sys/mntent.h> +#endif + +#ifdef MOUNTED_GETMNTENT1 +#if !HAVE_SETMNTENT /* Android <= 4.4 */ +#define setmntent(fp,mode) fopen (fp, mode) +#endif +#if !HAVE_ENDMNTENT /* Android <= 4.4 */ +#define endmntent(fp) fclose (fp) +#endif +#endif + +#ifndef HAVE_HASMNTOPT +#define hasmntopt(mnt, opt) ((char *) 0) +#endif + +#undef MNT_IGNORE +#ifdef MNTOPT_IGNORE +#if defined __sun && defined __SVR4 +/* Solaris defines hasmntopt(struct mnttab *, char *) + while it is otherwise hasmntopt(struct mnttab *, const char *). */ +#define MNT_IGNORE(M) hasmntopt (M, (char *) MNTOPT_IGNORE) +#else +#define MNT_IGNORE(M) hasmntopt (M, MNTOPT_IGNORE) +#endif +#else +#define MNT_IGNORE(M) 0 +#endif + +#ifdef HAVE_INFOMOUNT_QNX +#include <sys/disk.h> +#include <sys/fsys.h> +#endif + +#ifdef HAVE_SYS_STATVFS_H /* SVR4. */ +#include <sys/statvfs.h> +#endif + +#include "lib/global.h" +#include "lib/strutil.h" /* str_verscmp() */ +#include "lib/unixcompat.h" /* makedev */ +#include "mountlist.h" + +/*** global variables ****************************************************************************/ + +/*** file scope macro definitions ****************************************************************/ + +#if defined (__QNX__) && !defined(__QNXNTO__) && !defined (HAVE_INFOMOUNT_LIST) +#define HAVE_INFOMOUNT_QNX +#endif + +#if defined(HAVE_INFOMOUNT_LIST) || defined(HAVE_INFOMOUNT_QNX) +#define HAVE_INFOMOUNT +#endif + +/* The results of opendir() in this file are not used with dirfd and fchdir, + therefore save some unnecessary work in fchdir.c. */ +#undef opendir +#undef closedir + +#define ME_DUMMY_0(Fs_name, Fs_type) \ + (strcmp (Fs_type, "autofs") == 0 \ + || strcmp (Fs_type, "proc") == 0 \ + || strcmp (Fs_type, "subfs") == 0 \ + /* for Linux 2.6/3.x */ \ + || strcmp (Fs_type, "debugfs") == 0 \ + || strcmp (Fs_type, "devpts") == 0 \ + || strcmp (Fs_type, "fusectl") == 0 \ + || strcmp (Fs_type, "fuse.portal") == 0 \ + || strcmp (Fs_type, "mqueue") == 0 \ + || strcmp (Fs_type, "rpc_pipefs") == 0 \ + || strcmp (Fs_type, "sysfs") == 0 \ + /* FreeBSD, Linux 2.4 */ \ + || strcmp (Fs_type, "devfs") == 0 \ + /* for NetBSD 3.0 */ \ + || strcmp (Fs_type, "kernfs") == 0 \ + /* for Irix 6.5 */ \ + || strcmp (Fs_type, "ignore") == 0) + +/* Historically, we have marked as "dummy" any file system of type "none", + but now that programs like du need to know about bind-mounted directories, + we grant an exception to any with "bind" in its list of mount options. + I.e., those are *not* dummy entries. */ +#ifdef MOUNTED_GETMNTENT1 +#define ME_DUMMY(Fs_name, Fs_type, Bind) \ + (ME_DUMMY_0 (Fs_name, Fs_type) \ + || (strcmp (Fs_type, "none") == 0 && !Bind)) +#else +#define ME_DUMMY(Fs_name, Fs_type) \ + (ME_DUMMY_0 (Fs_name, Fs_type) || strcmp (Fs_type, "none") == 0) +#endif + +#ifdef __CYGWIN__ +#include <windows.h> +#define ME_REMOTE me_remote +/* All cygwin mount points include ':' or start with '//'; so it + requires a native Windows call to determine remote disks. */ +static int +me_remote (char const *fs_name, char const *fs_type) +{ + (void) fs_type; + + if (fs_name[0] && fs_name[1] == ':') + { + char drive[4]; + sprintf (drive, "%c:\\", fs_name[0]); + switch (GetDriveType (drive)) + { + case DRIVE_REMOVABLE: + case DRIVE_FIXED: + case DRIVE_CDROM: + case DRIVE_RAMDISK: + return 0; + } + } + return 1; +} +#endif +#ifndef ME_REMOTE +/* A file system is 'remote' if its Fs_name contains a ':' + or if (it is of type (smbfs or smb3 or cifs) and its Fs_name starts with '//') + or if it is of any other of the listed types + or Fs_name is equal to "-hosts" (used by autofs to mount remote fs). + "VM" file systems like prl_fs or vboxsf are not considered remote here. */ +#define ME_REMOTE(Fs_name, Fs_type) \ + (strchr (Fs_name, ':') != NULL \ + || ((Fs_name)[0] == '/' \ + && (Fs_name)[1] == '/' \ + && (strcmp (Fs_type, "smbfs") == 0 \ + || strcmp (Fs_type, "smb3") == 0 \ + || strcmp (Fs_type, "cifs") == 0)) \ + || strcmp (Fs_type, "acfs") == 0 \ + || strcmp (Fs_type, "afs") == 0 \ + || strcmp (Fs_type, "coda") == 0 \ + || strcmp (Fs_type, "auristorfs") == 0 \ + || strcmp (Fs_type, "fhgfs") == 0 \ + || strcmp (Fs_type, "gpfs") == 0 \ + || strcmp (Fs_type, "ibrix") == 0 \ + || strcmp (Fs_type, "ocfs2") == 0 \ + || strcmp (Fs_type, "vxfs") == 0 \ + || strcmp ("-hosts", Fs_name) == 0) +#endif + +/* Many space usage primitives use all 1 bits to denote a value that is + not applicable or unknown. Propagate this information by returning + a uintmax_t value that is all 1 bits if X is all 1 bits, even if X + is unsigned and narrower than uintmax_t. */ +#define PROPAGATE_ALL_ONES(x) \ + ((sizeof (x) < sizeof (uintmax_t) \ + && (~ (x) == (sizeof (x) < sizeof (int) \ + ? - (1 << (sizeof (x) * CHAR_BIT)) \ + : 0))) \ + ? UINTMAX_MAX : (uintmax_t) (x)) + +/* Extract the top bit of X as an uintmax_t value. */ +#define EXTRACT_TOP_BIT(x) ((x) & ((uintmax_t) 1 << (sizeof (x) * CHAR_BIT - 1))) + +/* If a value is negative, many space usage primitives store it into an + integer variable by assignment, even if the variable's type is unsigned. + So, if a space usage variable X's top bit is set, convert X to the + uintmax_t value V such that (- (uintmax_t) V) is the negative of + the original value. If X's top bit is clear, just yield X. + Use PROPAGATE_TOP_BIT if the original value might be negative; + otherwise, use PROPAGATE_ALL_ONES. */ +#define PROPAGATE_TOP_BIT(x) ((x) | ~ (EXTRACT_TOP_BIT (x) - 1)) + +#ifdef STAT_STATVFS +#if ! (defined __linux__ && (defined __GLIBC__ || defined __UCLIBC__)) +/* The FRSIZE fallback is not required in this case. */ +#undef STAT_STATFS2_FRSIZE +#else +#include <sys/utsname.h> +#include <sys/statfs.h> +#define STAT_STATFS2_BSIZE 1 +#endif +#endif + +/*** file scope type declarations ****************************************************************/ + +/* A mount table entry. */ +struct mount_entry +{ + char *me_devname; /* Device node name, including "/dev/". */ + char *me_mountdir; /* Mount point directory name. */ + char *me_mntroot; /* Directory on filesystem of device used + as root for the (bind) mount. */ + char *me_type; /* "nfs", "4.2", etc. */ + dev_t me_dev; /* Device number of me_mountdir. */ + unsigned int me_dummy:1; /* Nonzero for dummy file systems. */ + unsigned int me_remote:1; /* Nonzero for remote filesystems. */ + unsigned int me_type_malloced:1; /* Nonzero if me_type was malloced. */ +}; + +struct fs_usage +{ + uintmax_t fsu_blocksize; /* Size of a block. */ + uintmax_t fsu_blocks; /* Total blocks. */ + uintmax_t fsu_bfree; /* Free blocks available to superuser. */ + uintmax_t fsu_bavail; /* Free blocks available to non-superuser. */ + int fsu_bavail_top_bit_set; /* 1 if fsu_bavail represents a value < 0. */ + uintmax_t fsu_files; /* Total file nodes. */ + uintmax_t fsu_ffree; /* Free file nodes. */ +}; + +/*** forward declarations (file scope functions) *************************************************/ + +/*** file scope variables ************************************************************************/ + +#ifdef HAVE_INFOMOUNT_LIST +static GSList *mc_mount_list = NULL; +#endif /* HAVE_INFOMOUNT_LIST */ + +/* --------------------------------------------------------------------------------------------- */ +/*** file scope functions ************************************************************************/ +/* --------------------------------------------------------------------------------------------- */ + +#ifdef STAT_STATVFS +/* Return true if statvfs works. This is false for statvfs on systems + with GNU libc on Linux kernels before 2.6.36, which stats all + preceding entries in /proc/mounts; that makes df hang if even one + of the corresponding file systems is hard-mounted but not available. */ +static int +statvfs_works (void) +{ +#if ! (defined __linux__ && (defined __GLIBC__ || defined __UCLIBC__)) + return 1; +#else + static int statvfs_works_cache = -1; + struct utsname name; + + if (statvfs_works_cache < 0) + statvfs_works_cache = (uname (&name) == 0 && 0 <= str_verscmp (name.release, "2.6.36")); + return statvfs_works_cache; +#endif +} +#endif + +/* --------------------------------------------------------------------------------------------- */ + +#ifdef HAVE_INFOMOUNT_LIST +static void +free_mount_entry (struct mount_entry *me) +{ + if (me == NULL) + return; + g_free (me->me_devname); + g_free (me->me_mountdir); + g_free (me->me_mntroot); + if (me->me_type_malloced) + g_free (me->me_type); + g_free (me); +} + +/* --------------------------------------------------------------------------------------------- */ + +#ifdef MOUNTED_GETMNTINFO /* Mac OS X, FreeBSD, OpenBSD, also (obsolete) 4.4BSD */ + +#ifndef HAVE_STRUCT_STATFS_F_FSTYPENAME +static char * +fstype_to_string (short int t) +{ + switch (t) + { +#ifdef MOUNT_PC + /* cppcheck-suppress syntaxError */ + case MOUNT_PC: + return "pc"; +#endif +#ifdef MOUNT_MFS + /* cppcheck-suppress syntaxError */ + case MOUNT_MFS: + return "mfs"; +#endif +#ifdef MOUNT_LO + /* cppcheck-suppress syntaxError */ + case MOUNT_LO: + return "lo"; +#endif +#ifdef MOUNT_TFS + /* cppcheck-suppress syntaxError */ + case MOUNT_TFS: + return "tfs"; +#endif +#ifdef MOUNT_TMP + /* cppcheck-suppress syntaxError */ + case MOUNT_TMP: + return "tmp"; +#endif +#ifdef MOUNT_UFS + /* cppcheck-suppress syntaxError */ + case MOUNT_UFS: + return "ufs"; +#endif +#ifdef MOUNT_NFS + /* cppcheck-suppress syntaxError */ + case MOUNT_NFS: + return "nfs"; +#endif +#ifdef MOUNT_MSDOS + /* cppcheck-suppress syntaxError */ + case MOUNT_MSDOS: + return "msdos"; +#endif +#ifdef MOUNT_LFS + /* cppcheck-suppress syntaxError */ + case MOUNT_LFS: + return "lfs"; +#endif +#ifdef MOUNT_LOFS + /* cppcheck-suppress syntaxError */ + case MOUNT_LOFS: + return "lofs"; +#endif +#ifdef MOUNT_FDESC + /* cppcheck-suppress syntaxError */ + case MOUNT_FDESC: + return "fdesc"; +#endif +#ifdef MOUNT_PORTAL + /* cppcheck-suppress syntaxError */ + case MOUNT_PORTAL: + return "portal"; +#endif +#ifdef MOUNT_NULL + /* cppcheck-suppress syntaxError */ + case MOUNT_NULL: + return "null"; +#endif +#ifdef MOUNT_UMAP + /* cppcheck-suppress syntaxError */ + case MOUNT_UMAP: + return "umap"; +#endif +#ifdef MOUNT_KERNFS + /* cppcheck-suppress syntaxError */ + case MOUNT_KERNFS: + return "kernfs"; +#endif +#ifdef MOUNT_PROCFS + /* cppcheck-suppress syntaxError */ + case MOUNT_PROCFS: + return "procfs"; +#endif +#ifdef MOUNT_AFS + /* cppcheck-suppress syntaxError */ + case MOUNT_AFS: + return "afs"; +#endif +#ifdef MOUNT_CD9660 + /* cppcheck-suppress syntaxError */ + case MOUNT_CD9660: + return "cd9660"; +#endif +#ifdef MOUNT_UNION + /* cppcheck-suppress syntaxError */ + case MOUNT_UNION: + return "union"; +#endif +#ifdef MOUNT_DEVFS + /* cppcheck-suppress syntaxError */ + case MOUNT_DEVFS: + return "devfs"; +#endif +#ifdef MOUNT_EXT2FS + /* cppcheck-suppress syntaxError */ + case MOUNT_EXT2FS: + return "ext2fs"; +#endif + default: + return "?"; + } +} +#endif /* ! HAVE_STRUCT_STATFS_F_FSTYPENAME */ + +/* --------------------------------------------------------------------------------------------- */ + +static char * +fsp_to_string (const struct statfs *fsp) +{ +#ifdef HAVE_STRUCT_STATFS_F_FSTYPENAME + return (char *) (fsp->f_fstypename); +#else + return fstype_to_string (fsp->f_type); +#endif +} +#endif /* MOUNTED_GETMNTINFO */ + +/* --------------------------------------------------------------------------------------------- */ + +#ifdef MOUNTED_VMOUNT /* AIX */ +static char * +fstype_to_string (int t) +{ + struct vfs_ent *e; + + e = getvfsbytype (t); + if (!e || !e->vfsent_name) + return "none"; + else + return e->vfsent_name; +} +#endif /* MOUNTED_VMOUNT */ + +/* --------------------------------------------------------------------------------------------- */ + +#if defined MOUNTED_GETMNTENT1 || defined MOUNTED_GETMNTENT2 + +/* Return the device number from MOUNT_OPTIONS, if possible. + Otherwise return (dev_t) -1. */ + +/* --------------------------------------------------------------------------------------------- */ + +static dev_t +dev_from_mount_options (char const *mount_options) +{ + /* GNU/Linux allows file system implementations to define their own + meaning for "dev=" mount options, so don't trust the meaning + here. */ +#ifndef __linux__ + static char const dev_pattern[] = ",dev="; + char const *devopt = strstr (mount_options, dev_pattern); + + if (devopt) + { + char const *optval = devopt + sizeof (dev_pattern) - 1; + char *optvalend; + unsigned long int dev; + errno = 0; + dev = strtoul (optval, &optvalend, 16); + if (optval != optvalend + && (*optvalend == '\0' || *optvalend == ',') + && !(dev == ULONG_MAX && errno == ERANGE) && dev == (dev_t) dev) + return dev; + } +#endif + + (void) mount_options; + return -1; +} + +#endif + +/* --------------------------------------------------------------------------------------------- */ + +#if defined MOUNTED_GETMNTENT1 && (defined __linux__ || defined __ANDROID__) /* GNU/Linux, Android */ + +/* Unescape the paths in mount tables. + STR is updated in place. */ +static void +unescape_tab (char *str) +{ + size_t i, j = 0; + size_t len; + + len = strlen (str) + 1; + + for (i = 0; i < len; i++) + { + if (str[i] == '\\' && (i + 4 < len) + && str[i + 1] >= '0' && str[i + 1] <= '3' + && str[i + 2] >= '0' && str[i + 2] <= '7' && str[i + 3] >= '0' && str[i + 3] <= '7') + { + str[j++] = (str[i + 1] - '0') * 64 + (str[i + 2] - '0') * 8 + (str[i + 3] - '0'); + i += 3; + } + else + str[j++] = str[i]; + } +} +#endif + +/* --------------------------------------------------------------------------------------------- */ + +/* Return a list of the currently mounted file systems, or NULL on error. + Add each entry to the tail of the list so that they stay in order. */ + +static GSList * +read_file_system_list (void) +{ + GSList *mount_list = NULL; + struct mount_entry *me; + +#ifdef MOUNTED_GETMNTENT1 /* glibc, HP-UX, IRIX, Cygwin, Android, + also (obsolete) 4.3BSD, SunOS */ + { + FILE *fp; + +#if defined __linux__ || defined __ANDROID__ + /* Try parsing mountinfo first, as that make device IDs available. + Note we could use libmount routines to simplify this parsing a little + (and that code is in previous versions of this function), however + libmount depends on libselinux which pulls in many dependencies. */ + char const *mountinfo = "/proc/self/mountinfo"; + + fp = fopen (mountinfo, "r"); + if (fp != NULL) + { + char *line = NULL; + size_t buf_size = 0; + + while (getline (&line, &buf_size, fp) != -1) + { + unsigned int devmaj, devmin; + int target_s, target_e, type_s, type_e; + int source_s, source_e, mntroot_s, mntroot_e; + char test; + char *dash; + int rc; + + rc = sscanf (line, "%*u " /* id - discarded */ + "%*u " /* parent - discarded */ + "%u:%u " /* dev major:minor */ + "%n%*s%n " /* mountroot */ + "%n%*s%n" /* target, start and end */ + "%c", /* more data... */ + &devmaj, &devmin, &mntroot_s, &mntroot_e, &target_s, &target_e, &test); + + if (rc != 3 && rc != 7) /* 7 if %n included in count. */ + continue; + + /* skip optional fields, terminated by " - " */ + dash = strstr (line + target_e, " - "); + if (dash == NULL) + continue; + + rc = sscanf (dash, " - " /* */ + "%n%*s%n " /* FS type, start and end */ + "%n%*s%n " /* source, start and end */ + "%c", /* more data... */ + &type_s, &type_e, &source_s, &source_e, &test); + if (rc != 1 && rc != 5) /* 5 if %n included in count. */ + continue; + + /* manipulate the sub-strings in place. */ + line[mntroot_e] = '\0'; + line[target_e] = '\0'; + dash[type_e] = '\0'; + dash[source_e] = '\0'; + unescape_tab (dash + source_s); + unescape_tab (line + target_s); + unescape_tab (line + mntroot_s); + + me = g_malloc (sizeof *me); + + me->me_devname = g_strdup (dash + source_s); + me->me_mountdir = g_strdup (line + target_s); + me->me_mntroot = g_strdup (line + mntroot_s); + me->me_type = g_strdup (dash + type_s); + me->me_type_malloced = 1; + me->me_dev = makedev (devmaj, devmin); + /* we pass "false" for the "Bind" option as that's only + significant when the Fs_type is "none" which will not be + the case when parsing "/proc/self/mountinfo", and only + applies for static /etc/mtab files. */ + me->me_dummy = ME_DUMMY (me->me_devname, me->me_type, FALSE); + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + + mount_list = g_slist_prepend (mount_list, me); + } + + free (line); + + if (ferror (fp) != 0) + { + int saved_errno = errno; + + fclose (fp); + errno = saved_errno; + goto free_then_fail; + } + + if (fclose (fp) == EOF) + goto free_then_fail; + } + else /* fallback to /proc/self/mounts (/etc/mtab). */ +#endif /* __linux __ || __ANDROID__ */ + { + struct mntent *mnt; + const char *table = MOUNTED; + + fp = setmntent (table, "r"); + if (fp == NULL) + return NULL; + + while ((mnt = getmntent (fp)) != NULL) + { + gboolean bind; + + bind = hasmntopt (mnt, "bind") != NULL; + + me = g_malloc (sizeof (*me)); + me->me_devname = g_strdup (mnt->mnt_fsname); + me->me_mountdir = g_strdup (mnt->mnt_dir); + me->me_mntroot = NULL; + me->me_type = g_strdup (mnt->mnt_type); + me->me_type_malloced = 1; + me->me_dummy = ME_DUMMY (me->me_devname, me->me_type, bind); + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + me->me_dev = dev_from_mount_options (mnt->mnt_opts); + + mount_list = g_slist_prepend (mount_list, me); + } + + if (endmntent (fp) == 0) + goto free_then_fail; + } + } +#endif /* MOUNTED_GETMNTENT1. */ + +#ifdef MOUNTED_GETMNTINFO /* Mac OS X, FreeBSD, OpenBSD, also (obsolete) 4.4BSD */ + { + struct statfs *fsp; + int entries; + + entries = getmntinfo (&fsp, MNT_NOWAIT); + if (entries < 0) + return NULL; + for (; entries-- > 0; fsp++) + { + char *fs_type = fsp_to_string (fsp); + + me = g_malloc (sizeof (*me)); + me->me_devname = g_strdup (fsp->f_mntfromname); + me->me_mountdir = g_strdup (fsp->f_mntonname); + me->me_mntroot = NULL; + me->me_type = fs_type; + me->me_type_malloced = 0; + me->me_dummy = ME_DUMMY (me->me_devname, me->me_type); + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + me->me_dev = (dev_t) (-1); /* Magic; means not known yet. */ + + mount_list = g_slist_prepend (mount_list, me); + } + } +#endif /* MOUNTED_GETMNTINFO */ + +#ifdef MOUNTED_GETMNTINFO2 /* NetBSD, Minix */ + { + struct statvfs *fsp; + int entries; + + entries = getmntinfo (&fsp, MNT_NOWAIT); + if (entries < 0) + return NULL; + for (; entries-- > 0; fsp++) + { + me = g_malloc (sizeof (*me)); + me->me_devname = g_strdup (fsp->f_mntfromname); + me->me_mountdir = g_strdup (fsp->f_mntonname); + me->me_mntroot = NULL; + me->me_type = g_strdup (fsp->f_fstypename); + me->me_type_malloced = 1; + me->me_dummy = ME_DUMMY (me->me_devname, me->me_type); + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + me->me_dev = (dev_t) (-1); /* Magic; means not known yet. */ + + mount_list = g_slist_prepend (mount_list, me); + } + } +#endif /* MOUNTED_GETMNTINFO2 */ + +#if defined MOUNTED_FS_STAT_DEV /* Haiku, also (obsolete) BeOS */ + { + /* The next_dev() and fs_stat_dev() system calls give the list of + all file systems, including the information returned by statvfs() + (fs type, total blocks, free blocks etc.), but without the mount + point. But on BeOS all file systems except / are mounted in the + rootfs, directly under /. + The directory name of the mount point is often, but not always, + identical to the volume name of the device. + We therefore get the list of subdirectories of /, and the list + of all file systems, and match the two lists. */ + + DIR *dirp; + struct rootdir_entry + { + char *name; + dev_t dev; + ino_t ino; + struct rootdir_entry *next; + }; + struct rootdir_entry *rootdir_list; + struct rootdir_entry **rootdir_tail; + int32 pos; + dev_t dev; + fs_info fi; + + /* All volumes are mounted in the rootfs, directly under /. */ + rootdir_list = NULL; + rootdir_tail = &rootdir_list; + dirp = opendir (PATH_SEP_STR); + if (dirp) + { + struct dirent *d; + + while ((d = readdir (dirp)) != NULL) + { + char *name; + struct stat statbuf; + + if (DIR_IS_DOT (d->d_name)) + continue; + + if (DIR_IS_DOTDOT (d->d_name)) + name = g_strdup (PATH_SEP_STR); + else + name = g_strconcat (PATH_SEP_STR, d->d_name, (char *) NULL); + + if (lstat (name, &statbuf) >= 0 && S_ISDIR (statbuf.st_mode)) + { + struct rootdir_entry *re = g_malloc (sizeof (*re)); + re->name = name; + re->dev = statbuf.st_dev; + re->ino = statbuf.st_ino; + + /* Add to the linked list. */ + *rootdir_tail = re; + rootdir_tail = &re->next; + } + else + g_free (name); + } + closedir (dirp); + } + *rootdir_tail = NULL; + + for (pos = 0; (dev = next_dev (&pos)) >= 0;) + if (fs_stat_dev (dev, &fi) >= 0) + { + /* Note: fi.dev == dev. */ + struct rootdir_entry *re; + + for (re = rootdir_list; re; re = re->next) + if (re->dev == fi.dev && re->ino == fi.root) + break; + + me = g_malloc (sizeof (*me)); + me->me_devname = + g_strdup (fi.device_name[0] != '\0' ? fi.device_name : fi.fsh_name); + me->me_mountdir = g_strdup (re != NULL ? re->name : fi.fsh_name); + me->me_mntroot = NULL; + me->me_type = g_strdup (fi.fsh_name); + me->me_type_malloced = 1; + me->me_dev = fi.dev; + me->me_dummy = 0; + me->me_remote = (fi.flags & B_FS_IS_SHARED) != 0; + + mount_list = g_slist_prepend (mount_list, me); + } + + while (rootdir_list != NULL) + { + struct rootdir_entry *re = rootdir_list; + + rootdir_list = re->next; + g_free (re->name); + g_free (re); + } + } +#endif /* MOUNTED_FS_STAT_DEV */ + +#ifdef MOUNTED_GETFSSTAT /* OSF/1, also (obsolete) Apple Darwin 1.3 */ + { + int numsys, counter; + size_t bufsize; + struct statfs *stats; + + numsys = getfsstat (NULL, 0L, MNT_NOWAIT); + if (numsys < 0) + return NULL; + if (SIZE_MAX / sizeof (*stats) <= numsys) + { + fprintf (stderr, "%s\n", _("Memory exhausted!")); + exit (EXIT_FAILURE); + } + + bufsize = (1 + numsys) * sizeof (*stats); + stats = g_malloc (bufsize); + numsys = getfsstat (stats, bufsize, MNT_NOWAIT); + + if (numsys < 0) + { + g_free (stats); + return NULL; + } + + for (counter = 0; counter < numsys; counter++) + { + me = g_malloc (sizeof (*me)); + me->me_devname = g_strdup (stats[counter].f_mntfromname); + me->me_mountdir = g_strdup (stats[counter].f_mntonname); + me->me_mntroot = NULL; + me->me_type = g_strdup (FS_TYPE (stats[counter])); + me->me_type_malloced = 1; + me->me_dummy = ME_DUMMY (me->me_devname, me->me_type); + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + me->me_dev = (dev_t) (-1); /* Magic; means not known yet. */ + + mount_list = g_slist_prepend (mount_list, me); + } + + g_free (stats); + } +#endif /* MOUNTED_GETFSSTAT */ + +#if defined MOUNTED_FREAD_FSTYP /* (obsolete) SVR3 */ + { + struct mnttab mnt; + char *table = "/etc/mnttab"; + FILE *fp; + + fp = fopen (table, "r"); + if (fp == NULL) + return NULL; + + while (fread (&mnt, sizeof (mnt), 1, fp) > 0) + { + me = g_malloc (sizeof (*me)); + me->me_devname = g_strdup (mnt.mt_dev); + me->me_mountdir = g_strdup (mnt.mt_filsys); + me->me_mntroot = NULL; + me->me_dev = (dev_t) (-1); /* Magic; means not known yet. */ + me->me_type = ""; + me->me_type_malloced = 0; + { + struct statfs fsd; + char typebuf[FSTYPSZ]; + + if (statfs (me->me_mountdir, &fsd, sizeof (fsd), 0) != -1 + && sysfs (GETFSTYP, fsd.f_fstyp, typebuf) != -1) + { + me->me_type = g_strdup (typebuf); + me->me_type_malloced = 1; + } + } + me->me_dummy = ME_DUMMY (me->me_devname, me->me_type); + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + + mount_list = g_slist_prepend (mount_list, me); + } + + if (ferror (fp)) + { + /* The last fread() call must have failed. */ + int saved_errno = errno; + + fclose (fp); + errno = saved_errno; + goto free_then_fail; + } + + if (fclose (fp) == EOF) + goto free_then_fail; + } +#endif /* MOUNTED_FREAD_FSTYP */ + +#ifdef MOUNTED_GETEXTMNTENT /* Solaris >= 8 */ + { + struct extmnttab mnt; + const char *table = MNTTAB; + FILE *fp; + int ret; + + /* No locking is needed, because the contents of /etc/mnttab is generated by the kernel. */ + + errno = 0; + fp = fopen (table, "r"); + if (fp == NULL) + ret = errno; + else + { + while ((ret = getextmntent (fp, &mnt, 1)) == 0) + { + me = g_malloc (sizeof *me); + me->me_devname = g_strdup (mnt.mnt_special); + me->me_mountdir = g_strdup (mnt.mnt_mountp); + me->me_mntroot = NULL; + me->me_type = g_strdup (mnt.mnt_fstype); + me->me_type_malloced = 1; + me->me_dummy = MNT_IGNORE (&mnt) != 0; + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + me->me_dev = makedev (mnt.mnt_major, mnt.mnt_minor); + + mount_list = g_slist_prepend (mount_list, me); + } + + ret = fclose (fp) == EOF ? errno : 0 < ret ? 0 : -1; + /* Here ret = -1 means success, ret >= 0 means failure. */ + } + + if (ret >= 0) + { + errno = ret; + goto free_then_fail; + } + } +#endif /* MOUNTED_GETEXTMNTENT */ + +#ifdef MOUNTED_GETMNTENT2 /* Solaris < 8, also (obsolete) SVR4 */ + { + struct mnttab mnt; + const char *table = MNTTAB; + FILE *fp; + int ret; + int lockfd = -1; + +#if defined F_RDLCK && defined F_SETLKW + /* MNTTAB_LOCK is a macro name of our own invention; it's not present in + e.g. Solaris 2.6. If the SVR4 folks ever define a macro + for this file name, we should use their macro name instead. + (Why not just lock MNTTAB directly? We don't know.) */ +#ifndef MNTTAB_LOCK +#define MNTTAB_LOCK "/etc/.mnttab.lock" +#endif + lockfd = open (MNTTAB_LOCK, O_RDONLY); + if (lockfd >= 0) + { + struct flock flock; + + flock.l_type = F_RDLCK; + flock.l_whence = SEEK_SET; + flock.l_start = 0; + flock.l_len = 0; + while (fcntl (lockfd, F_SETLKW, &flock) == -1) + if (errno != EINTR) + { + int saved_errno = errno; + close (lockfd); + errno = saved_errno; + return NULL; + } + } + else if (errno != ENOENT) + return NULL; +#endif + + errno = 0; + fp = fopen (table, "r"); + if (fp == NULL) + ret = errno; + else + { + while ((ret = getmntent (fp, &mnt)) == 0) + { + me = g_malloc (sizeof (*me)); + me->me_devname = g_strdup (mnt.mnt_special); + me->me_mountdir = g_strdup (mnt.mnt_mountp); + me->me_mntroot = NULL; + me->me_type = g_strdup (mnt.mnt_fstype); + me->me_type_malloced = 1; + me->me_dummy = MNT_IGNORE (&mnt) != 0; + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + me->me_dev = dev_from_mount_options (mnt.mnt_mntopts); + + mount_list = g_slist_prepend (mount_list, me); + } + + ret = fclose (fp) == EOF ? errno : 0 < ret ? 0 : -1; + /* Here ret = -1 means success, ret >= 0 means failure. */ + } + + if (lockfd >= 0 && close (lockfd) != 0) + ret = errno; + + if (ret >= 0) + { + errno = ret; + goto free_then_fail; + } + } +#endif /* MOUNTED_GETMNTENT2. */ + +#ifdef MOUNTED_VMOUNT /* AIX */ + { + int bufsize; + void *entries; + char *thisent; + struct vmount *vmp; + int n_entries; + int i; + + /* Ask how many bytes to allocate for the mounted file system info. */ + entries = &bufsize; + if (mntctl (MCTL_QUERY, sizeof (bufsize), entries) != 0) + return NULL; + entries = g_malloc (bufsize); + + /* Get the list of mounted file systems. */ + n_entries = mntctl (MCTL_QUERY, bufsize, entries); + if (n_entries < 0) + { + int saved_errno = errno; + + g_free (entries); + errno = saved_errno; + return NULL; + } + + for (i = 0, thisent = entries; i < n_entries; i++, thisent += vmp->vmt_length) + { + char *options, *ignore; + + vmp = (struct vmount *) thisent; + me = g_malloc (sizeof (*me)); + if (vmp->vmt_flags & MNT_REMOTE) + { + char *host, *dir; + + me->me_remote = 1; + /* Prepend the remote dirname. */ + host = thisent + vmp->vmt_data[VMT_HOSTNAME].vmt_off; + dir = thisent + vmp->vmt_data[VMT_OBJECT].vmt_off; + me->me_devname = g_strconcat (host, ":", dir, (char *) NULL); + } + else + { + me->me_remote = 0; + me->me_devname = g_strdup (thisent + vmp->vmt_data[VMT_OBJECT].vmt_off); + } + me->me_mountdir = g_strdup (thisent + vmp->vmt_data[VMT_STUB].vmt_off); + me->me_mntroot = NULL; + me->me_type = g_strdup (fstype_to_string (vmp->vmt_gfstype)); + me->me_type_malloced = 1; + options = thisent + vmp->vmt_data[VMT_ARGS].vmt_off; + ignore = strstr (options, "ignore"); + me->me_dummy = (ignore + && (ignore == options || ignore[-1] == ',') + && (ignore[sizeof ("ignore") - 1] == ',' + || ignore[sizeof ("ignore") - 1] == '\0')); + me->me_dev = (dev_t) (-1); /* vmt_fsid might be the info we want. */ + + mount_list = g_slist_prepend (mount_list, me); + } + g_free (entries); + } +#endif /* MOUNTED_VMOUNT. */ + +#ifdef MOUNTED_INTERIX_STATVFS /* Interix */ + { + DIR *dirp = opendir ("/dev/fs"); + char node[9 + NAME_MAX]; + + if (!dirp) + goto free_then_fail; + + while (1) + { + struct statvfs dev; + struct dirent entry; + struct dirent *result; + + if (readdir_r (dirp, &entry, &result) || result == NULL) + break; + + strcpy (node, "/dev/fs/"); + strcat (node, entry.d_name); + + if (statvfs (node, &dev) == 0) + { + me = g_malloc (sizeof *me); + me->me_devname = g_strdup (dev.f_mntfromname); + me->me_mountdir = g_strdup (dev.f_mntonname); + me->me_mntroot = NULL; + me->me_type = g_strdup (dev.f_fstypename); + me->me_type_malloced = 1; + me->me_dummy = ME_DUMMY (me->me_devname, me->me_type); + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + me->me_dev = (dev_t) (-1); /* Magic; means not known yet. */ + + mount_list = g_slist_prepend (mount_list, me); + } + } + closedir (dirp); + } +#endif /* MOUNTED_INTERIX_STATVFS */ + + return g_slist_reverse (mount_list); + + free_then_fail: + { + int saved_errno = errno; + + g_slist_free_full (mount_list, (GDestroyNotify) free_mount_entry); + + errno = saved_errno; + return NULL; + } +} +#endif /* HAVE_INFOMOUNT_LIST */ + +/* --------------------------------------------------------------------------------------------- */ + +#ifdef HAVE_INFOMOUNT_QNX +/** + ** QNX has no [gs]etmnt*(), [gs]etfs*(), or /etc/mnttab, but can do + ** this via the following code. + ** Note that, as this is based on CWD, it only fills one mount_entry + ** structure. See my_statfs() below for the "other side" of this hack. + */ + +static GSList * +read_file_system_list (void) +{ + struct _disk_entry de; + struct statfs fs; + int i, fd; + char *tp, dev[_POSIX_NAME_MAX], dir[_POSIX_PATH_MAX]; + struct mount_entry *me = NULL; + static GSList *list = NULL; + + if (list != NULL) + { + me = (struct mount_entry *) list->data; + + g_free (me->me_devname); + g_free (me->me_mountdir); + g_free (me->me_mntroot); + g_free (me->me_type); + } + else + { + me = (struct mount_entry *) g_malloc (sizeof (struct mount_entry)); + list = g_slist_prepend (list, me); + } + + if (!getcwd (dir, _POSIX_PATH_MAX)) + return (NULL); + + fd = open (dir, O_RDONLY); + if (fd == -1) + return (NULL); + + i = disk_get_entry (fd, &de); + + close (fd); + + if (i == -1) + return (NULL); + + switch (de.disk_type) + { + case _UNMOUNTED: + tp = "unmounted"; + break; + case _FLOPPY: + tp = "Floppy"; + break; + case _HARD: + tp = "Hard"; + break; + case _RAMDISK: + tp = "Ram"; + break; + case _REMOVABLE: + tp = "Removable"; + break; + case _TAPE: + tp = "Tape"; + break; + case _CDROM: + tp = "CDROM"; + break; + default: + tp = "unknown"; + } + + if (fsys_get_mount_dev (dir, &dev) == -1) + return (NULL); + + if (fsys_get_mount_pt (dev, &dir) == -1) + return (NULL); + + me->me_devname = g_strdup (dev); + me->me_mountdir = g_strdup (dir); + me->me_mntroot = NULL; + me->me_type = g_strdup (tp); + me->me_dev = de.disk_type; + +#ifdef DEBUG + fprintf (stderr, + "disk_get_entry():\n\tdisk_type=%d (%s)\n\tdriver_name='%-*.*s'\n\tdisk_drv=%d\n", + de.disk_type, tp, _DRIVER_NAME_LEN, _DRIVER_NAME_LEN, de.driver_name, de.disk_drv); + fprintf (stderr, "fsys_get_mount_dev():\n\tdevice='%s'\n", dev); + fprintf (stderr, "fsys_get_mount_pt():\n\tmount point='%s'\n", dir); +#endif /* DEBUG */ + + return (list); +} +#endif /* HAVE_INFOMOUNT_QNX */ + +/* --------------------------------------------------------------------------------------------- */ + +#ifdef HAVE_INFOMOUNT +/* Fill in the fields of FSP with information about space usage for + the file system on which FILE resides. + DISK is the device on which FILE is mounted, for space-getting + methods that need to know it. + Return 0 if successful, -1 if not. When returning -1, ensure that + ERRNO is either a system error value, or zero if DISK is NULL + on a system that requires a non-NULL value. */ +static int +get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp) +{ +#ifdef STAT_STATVFS /* POSIX, except pre-2.6.36 glibc/Linux */ + + if (statvfs_works ()) + { + struct statvfs vfsd; + + if (statvfs (file, &vfsd) < 0) + return -1; + + /* f_frsize isn't guaranteed to be supported. */ + fsp->fsu_blocksize = (vfsd.f_frsize + ? PROPAGATE_ALL_ONES (vfsd.f_frsize) + : PROPAGATE_ALL_ONES (vfsd.f_bsize)); + + fsp->fsu_blocks = PROPAGATE_ALL_ONES (vfsd.f_blocks); + fsp->fsu_bfree = PROPAGATE_ALL_ONES (vfsd.f_bfree); + fsp->fsu_bavail = PROPAGATE_TOP_BIT (vfsd.f_bavail); + fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (vfsd.f_bavail) != 0; + fsp->fsu_files = PROPAGATE_ALL_ONES (vfsd.f_files); + fsp->fsu_ffree = PROPAGATE_ALL_ONES (vfsd.f_ffree); + } + else +#endif + + { +#if defined STAT_STATVFS64 /* AIX */ + + struct statvfs64 fsd; + + if (statvfs64 (file, &fsd) < 0) + return -1; + + /* f_frsize isn't guaranteed to be supported. */ + /* *INDENT-OFF* */ + fsp->fsu_blocksize = fsd.f_frsize + ? PROPAGATE_ALL_ONES (fsd.f_frsize) + : PROPAGATE_ALL_ONES (fsd.f_bsize); + /* *INDENT-ON* */ + +#elif defined STAT_STATFS3_OSF1 /* OSF/1 */ + + struct statfs fsd; + + if (statfs (file, &fsd, sizeof (struct statfs)) != 0) + return -1; + + fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize); + +#elif defined STAT_STATFS2_FRSIZE /* 2.6 < glibc/Linux < 2.6.36 */ + + struct statfs fsd; + + if (statfs (file, &fsd) < 0) + return -1; + + fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_frsize); + +#elif defined STAT_STATFS2_BSIZE /* glibc/Linux < 2.6, 4.3BSD, SunOS 4, \ + Mac OS X < 10.4, FreeBSD < 5.0, \ + NetBSD < 3.0, OpenBSD < 4.4 */ + + struct statfs fsd; + + if (statfs (file, &fsd) < 0) + return -1; + + fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_bsize); + +#ifdef STATFS_TRUNCATES_BLOCK_COUNTS + + /* In SunOS 4.1.2, 4.1.3, and 4.1.3_U1, the block counts in the + struct statfs are truncated to 2GB. These conditions detect that + truncation, presumably without botching the 4.1.1 case, in which + the values are not truncated. The correct counts are stored in + undocumented spare fields. */ + if (fsd.f_blocks == 0x7fffffff / fsd.f_bsize && fsd.f_spare[0] > 0) + { + fsd.f_blocks = fsd.f_spare[0]; + fsd.f_bfree = fsd.f_spare[1]; + fsd.f_bavail = fsd.f_spare[2]; + } +#endif /* STATFS_TRUNCATES_BLOCK_COUNTS */ + +#elif defined STAT_STATFS2_FSIZE /* 4.4BSD and older NetBSD */ + + struct statfs fsd; + + if (statfs (file, &fsd) < 0) + return -1; + + fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize); + +#elif defined STAT_STATFS4 /* SVR3, old Irix */ + + struct statfs fsd; + + if (statfs (file, &fsd, sizeof (fsd), 0) < 0) + return -1; + + /* Empirically, the block counts on most SVR3 and SVR3-derived + systems seem to always be in terms of 512-byte blocks, + no matter what value f_bsize has. */ + fsp->fsu_blocksize = 512; +#endif + +#if (defined STAT_STATVFS64 || defined STAT_STATFS3_OSF1 \ + || defined STAT_STATFS2_FRSIZE || defined STAT_STATFS2_BSIZE \ + || defined STAT_STATFS2_FSIZE || defined STAT_STATFS4) + + fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.f_blocks); + fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.f_bfree); + fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.f_bavail); + fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.f_bavail) != 0; + fsp->fsu_files = PROPAGATE_ALL_ONES (fsd.f_files); + fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.f_ffree); + +#endif + } + + (void) disk; /* avoid argument-unused warning */ + + return 0; +} +#endif /* HAVE_INFOMOUNT */ + +/* --------------------------------------------------------------------------------------------- */ +/*** public functions ****************************************************************************/ +/* --------------------------------------------------------------------------------------------- */ + +void +free_my_statfs (void) +{ +#ifdef HAVE_INFOMOUNT_LIST + g_clear_slist (&mc_mount_list, (GDestroyNotify) free_mount_entry); +#endif /* HAVE_INFOMOUNT_LIST */ +} + +/* --------------------------------------------------------------------------------------------- */ + +void +init_my_statfs (void) +{ +#ifdef HAVE_INFOMOUNT_LIST + free_my_statfs (); + mc_mount_list = read_file_system_list (); +#endif /* HAVE_INFOMOUNT_LIST */ +} + +/* --------------------------------------------------------------------------------------------- */ + +void +my_statfs (struct my_statfs *myfs_stats, const char *path) +{ +#ifdef HAVE_INFOMOUNT_LIST + size_t len = 0; + struct mount_entry *entry = NULL; + GSList *temp; + struct fs_usage fs_use; + + for (temp = mc_mount_list; temp != NULL; temp = g_slist_next (temp)) + { + struct mount_entry *me; + size_t i; + + me = (struct mount_entry *) temp->data; + i = strlen (me->me_mountdir); + if (i > len && (strncmp (path, me->me_mountdir, i) == 0) && + (entry == NULL || IS_PATH_SEP (path[i]) || path[i] == '\0')) + { + len = i; + entry = me; + } + } + + if (entry != NULL) + { + memset (&fs_use, 0, sizeof (fs_use)); + get_fs_usage (entry->me_mountdir, NULL, &fs_use); + + myfs_stats->type = entry->me_dev; + myfs_stats->typename = entry->me_type; + myfs_stats->mpoint = entry->me_mountdir; + myfs_stats->mroot = entry->me_mntroot; + myfs_stats->device = entry->me_devname; + myfs_stats->avail = + ((uintmax_t) (getuid ()? fs_use.fsu_bavail : fs_use.fsu_bfree) * + fs_use.fsu_blocksize) >> 10; + myfs_stats->total = ((uintmax_t) fs_use.fsu_blocks * fs_use.fsu_blocksize) >> 10; + myfs_stats->nfree = (uintmax_t) fs_use.fsu_ffree; + myfs_stats->nodes = (uintmax_t) fs_use.fsu_files; + } + else +#endif /* HAVE_INFOMOUNT_LIST */ + +#ifdef HAVE_INFOMOUNT_QNX + /* + ** This is the "other side" of the hack to read_file_system_list() above. + ** It's not the most efficient approach, but consumes less memory. It + ** also accommodates QNX's ability to mount filesystems on the fly. + */ + struct mount_entry *entry; + struct fs_usage fs_use; + + entry = read_file_system_list (); + if (entry != NULL) + { + get_fs_usage (entry->me_mountdir, NULL, &fs_use); + + myfs_stats->type = entry->me_dev; + myfs_stats->typename = entry->me_type; + myfs_stats->mpoint = entry->me_mountdir; + myfs_stats->mroot = entry->me_mntroot; + myfs_stats->device = entry->me_devname; + + myfs_stats->avail = ((uintmax_t) fs_use.fsu_bfree * fs_use.fsu_blocksize) >> 10; + myfs_stats->total = ((uintmax_t) fs_use.fsu_blocks * fs_use.fsu_blocksize) >> 10; + myfs_stats->nfree = (uintmax_t) fs_use.fsu_ffree; + myfs_stats->nodes = (uintmax_t) fs_use.fsu_files; + } + else +#endif /* HAVE_INFOMOUNT_QNX */ + { + myfs_stats->type = 0; + myfs_stats->mpoint = "unknown"; + myfs_stats->device = "unknown"; + myfs_stats->avail = 0; + myfs_stats->total = 0; + myfs_stats->nfree = 0; + myfs_stats->nodes = 0; + } +} + +/* --------------------------------------------------------------------------------------------- */ |