diff options
Diffstat (limited to 'lib/mountlist.c')
| -rw-r--r-- | lib/mountlist.c | 828 |
1 files changed, 536 insertions, 292 deletions
diff --git a/lib/mountlist.c b/lib/mountlist.c index a50828e..1e592d2 100644 --- a/lib/mountlist.c +++ b/lib/mountlist.c @@ -1,12 +1,11 @@ /* mountlist.c -- return a list of mounted file systems - Copyright (C) 1991, 1992, 1997, 1998, 1999, 2000, 2001, 2002, 2003, - 2004, 2005, 2006, 2007 Free Software Foundation, Inc. + Copyright (C) 1991-1992, 1997-2016 Free Software Foundation, Inc. - This program is free software; you can redistribute it and/or modify + This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of @@ -14,8 +13,7 @@ GNU General Public License for more details. You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software Foundation, - Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <config.h> @@ -25,6 +23,7 @@ #include <stdio.h> #include <stdlib.h> #include <string.h> +#include <stdint.h> #include "xalloc.h" @@ -38,10 +37,10 @@ # include <sys/param.h> #endif -#if defined MOUNTED_GETFSSTAT /* OSF_1 and Darwin1.3.x */ +#if defined MOUNTED_GETFSSTAT /* OSF_1 and Darwin1.3.x */ # if 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 */ + NGROUPS is used as an array dimension in ucred.h */ # include <sys/ucred.h> /* needed by powerpc-apple-darwin1.3.7 */ # endif # if HAVE_SYS_MOUNT_H @@ -57,44 +56,45 @@ # endif #endif /* MOUNTED_GETFSSTAT */ -#ifdef MOUNTED_GETMNTENT1 /* 4.3BSD, SunOS, HP-UX, Dynix, Irix. */ +#ifdef MOUNTED_GETMNTENT1 /* 4.3BSD, SunOS, HP-UX, Dynix, Irix. */ # include <mntent.h> +# include <sys/types.h> # if !defined MOUNTED -# if defined _PATH_MOUNTED /* GNU libc */ +# if defined _PATH_MOUNTED /* GNU libc */ # define MOUNTED _PATH_MOUNTED # endif -# if defined MNT_MNTTAB /* HP-UX. */ +# if defined MNT_MNTTAB /* HP-UX. */ # define MOUNTED MNT_MNTTAB # endif -# if defined MNTTABNAME /* Dynix. */ +# if defined MNTTABNAME /* Dynix. */ # define MOUNTED MNTTABNAME # endif # endif #endif -#ifdef MOUNTED_GETMNTINFO /* 4.4BSD. */ +#ifdef MOUNTED_GETMNTINFO /* 4.4BSD. */ # include <sys/mount.h> #endif -#ifdef MOUNTED_GETMNTINFO2 /* NetBSD 3.0. */ +#ifdef MOUNTED_GETMNTINFO2 /* NetBSD 3.0. */ # include <sys/statvfs.h> #endif -#ifdef MOUNTED_GETMNT /* Ultrix. */ +#ifdef MOUNTED_GETMNT /* Ultrix. */ # include <sys/mount.h> # include <sys/fs_types.h> #endif -#ifdef MOUNTED_FS_STAT_DEV /* BeOS. */ +#ifdef MOUNTED_FS_STAT_DEV /* BeOS. */ # include <fs_info.h> # include <dirent.h> #endif -#ifdef MOUNTED_FREAD /* SVR2. */ +#ifdef MOUNTED_FREAD /* SVR2. */ # include <mnttab.h> #endif -#ifdef MOUNTED_FREAD_FSTYP /* SVR3. */ +#ifdef MOUNTED_FREAD_FSTYP /* SVR3. */ # include <mnttab.h> # include <sys/fstyp.h> # include <sys/statfs.h> @@ -104,15 +104,20 @@ # include <mntent.h> #endif -#ifdef MOUNTED_GETMNTENT2 /* SVR4. */ +#ifdef MOUNTED_GETMNTENT2 /* SVR4. */ # include <sys/mnttab.h> #endif -#ifdef MOUNTED_VMOUNT /* AIX. */ +#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 DOLPHIN /* So special that it's not worth putting this in autoconf. */ # undef MOUNTED_FREAD_FSTYP @@ -124,9 +129,19 @@ # include <sys/mntent.h> #endif +#ifndef HAVE_HASMNTOPT +# define hasmntopt(mnt, opt) ((char *) 0) +#endif + #undef MNT_IGNORE -#if defined MNTOPT_IGNORE && defined HAVE_HASMNTOPT -# define MNT_IGNORE(M) hasmntopt ((M), MNTOPT_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 @@ -135,41 +150,80 @@ # include "unlocked-io.h" #endif -#ifndef SIZE_MAX -# define SIZE_MAX ((size_t) -1) -#endif - -/* The results of open() in this file are not used with fchdir, - therefore save some unnecessary work in fchdir.c. */ -#undef open -#undef close - /* 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 +#ifdef GNULIB_defined_opendir +# undef opendir +#endif +#ifdef GNULIB_defined_closedir +# undef closedir +#endif -#ifndef ME_DUMMY +#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, "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) \ - (strcmp (Fs_type, "autofs") == 0 \ - || strcmp (Fs_type, "none") == 0 \ - || strcmp (Fs_type, "proc") == 0 \ - || strcmp (Fs_type, "subfs") == 0 \ - /* for NetBSD 3.0 */ \ - || strcmp (Fs_type, "kernfs") == 0 \ - /* for Irix 6.5 */ \ - || strcmp (Fs_type, "ignore") == 0) + (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 bool +me_remote (char const *fs_name, char const *fs_type _GL_UNUSED) +{ + 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 false; + } + } + return true; +} #endif #ifndef ME_REMOTE -/* A file system is `remote' if its Fs_name contains a `:' - or if (it is of type (smbfs or cifs) and its Fs_name starts with `//'). */ -# 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, "cifs") == 0))) +/* A file system is "remote" if its Fs_name contains a ':' + or if (it is of type (smbfs or cifs) and its Fs_name starts with '//'). */ +# 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, "cifs") == 0))) #endif #if MOUNTED_GETMNTINFO @@ -282,7 +336,7 @@ fsp_to_string (const struct statfs *fsp) #endif /* MOUNTED_GETMNTINFO */ -#ifdef MOUNTED_VMOUNT /* AIX. */ +#ifdef MOUNTED_VMOUNT /* AIX. */ static char * fstype_to_string (int t) { @@ -301,7 +355,6 @@ fstype_to_string (int t) /* 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) { @@ -321,19 +374,47 @@ dev_from_mount_options (char const *mount_options) errno = 0; dev = strtoul (optval, &optvalend, 16); if (optval != optvalend - && (*optvalend == '\0' || *optvalend == ',') - && ! (dev == ULONG_MAX && errno == ERANGE) - && dev == (dev_t) dev) - return dev; + && (*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__ + +/* 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 = 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. If NEED_FS_TYPE is true, ensure that the file system type fields in @@ -345,12 +426,12 @@ read_file_system_list (bool need_fs_type) struct mount_entry *mount_list; struct mount_entry *me; struct mount_entry **mtail = &mount_list; + (void) need_fs_type; #ifdef MOUNTED_LISTMNTENT { struct tabmntent *mntlist, *p; struct mntent *mnt; - struct mount_entry *me; /* the third and fourth arguments could be used to filter mounts, but Crays doesn't seem to have any mounts that we want to @@ -359,55 +440,157 @@ read_file_system_list (bool need_fs_type) if (listmntent (&mntlist, KMTAB, NULL, NULL) < 0) return NULL; - for (p = mntlist; p; p = p->next) { - mnt = p->ment; - me = xmalloc (sizeof *me); - me->me_devname = xstrdup (mnt->mnt_fsname); - me->me_mountdir = xstrdup (mnt->mnt_dir); - me->me_type = xstrdup (mnt->mnt_type); - 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 = -1; - *mtail = me; - mtail = &me->me_next; - } + for (p = mntlist; p; p = p->next) + { + mnt = p->ment; + me = xmalloc (sizeof *me); + me->me_devname = xstrdup (mnt->mnt_fsname); + me->me_mountdir = xstrdup (mnt->mnt_dir); + me->me_mntroot = NULL; + me->me_type = xstrdup (mnt->mnt_type); + 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 = -1; + *mtail = me; + mtail = &me->me_next; + } freemntlist (mntlist); } #endif #ifdef MOUNTED_GETMNTENT1 /* GNU/Linux, 4.3BSD, SunOS, HP-UX, Dynix, Irix. */ { - struct mntent *mnt; - char *table = MOUNTED; FILE *fp; - fp = setmntent (table, "r"); - if (fp == NULL) - return NULL; - - while ((mnt = getmntent (fp))) +#ifdef __linux__ + /* 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) { - me = xmalloc (sizeof *me); - me->me_devname = xstrdup (mnt->mnt_fsname); - me->me_mountdir = xstrdup (mnt->mnt_dir); - me->me_type = xstrdup (mnt->mnt_type); - 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_from_mount_options (mnt->mnt_opts); - - /* Add to the linked list. */ - *mtail = me; - mtail = &me->me_next; + 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) + 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 = xmalloc (sizeof *me); + + me->me_devname = xstrdup (dash + source_s); + me->me_mountdir = xstrdup (line + target_s); + me->me_mntroot = xstrdup (line + mntroot_s); + me->me_type = xstrdup (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); + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; + } + + free (line); + + if (ferror (fp)) + { + 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 __ */ + { + struct mntent *mnt; + char const *table = MOUNTED; - if (endmntent (fp) == 0) - goto free_then_fail; + fp = setmntent (table, "r"); + if (fp == NULL) + return NULL; + + while ((mnt = getmntent (fp))) + { + bool bind = hasmntopt (mnt, "bind"); + + me = xmalloc (sizeof *me); + me->me_devname = xstrdup (mnt->mnt_fsname); + me->me_mountdir = xstrdup (mnt->mnt_dir); + me->me_mntroot = NULL; + me->me_type = xstrdup (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); + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; + } + + if (endmntent (fp) == 0) + goto free_then_fail; + } } #endif /* MOUNTED_GETMNTENT1. */ -#ifdef MOUNTED_GETMNTINFO /* 4.4BSD. */ +#ifdef MOUNTED_GETMNTINFO /* 4.4BSD. */ { struct statfs *fsp; int entries; @@ -417,25 +600,26 @@ read_file_system_list (bool need_fs_type) return NULL; for (; entries-- > 0; fsp++) { - char *fs_type = fsp_to_string (fsp); - - me = xmalloc (sizeof *me); - me->me_devname = xstrdup (fsp->f_mntfromname); - me->me_mountdir = xstrdup (fsp->f_mntonname); - 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. */ - - /* Add to the linked list. */ - *mtail = me; - mtail = &me->me_next; + char *fs_type = fsp_to_string (fsp); + + me = xmalloc (sizeof *me); + me->me_devname = xstrdup (fsp->f_mntfromname); + me->me_mountdir = xstrdup (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. */ + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; } } #endif /* MOUNTED_GETMNTINFO */ -#ifdef MOUNTED_GETMNTINFO2 /* NetBSD 3.0. */ +#ifdef MOUNTED_GETMNTINFO2 /* NetBSD 3.0. */ { struct statvfs *fsp; int entries; @@ -445,44 +629,46 @@ read_file_system_list (bool need_fs_type) return NULL; for (; entries-- > 0; fsp++) { - me = xmalloc (sizeof *me); - me->me_devname = xstrdup (fsp->f_mntfromname); - me->me_mountdir = xstrdup (fsp->f_mntonname); - me->me_type = xstrdup (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. */ - - /* Add to the linked list. */ - *mtail = me; - mtail = &me->me_next; + me = xmalloc (sizeof *me); + me->me_devname = xstrdup (fsp->f_mntfromname); + me->me_mountdir = xstrdup (fsp->f_mntonname); + me->me_mntroot = NULL; + me->me_type = xstrdup (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. */ + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; } } #endif /* MOUNTED_GETMNTINFO2 */ -#ifdef MOUNTED_GETMNT /* Ultrix. */ +#ifdef MOUNTED_GETMNT /* Ultrix. */ { int offset = 0; int val; struct fs_data fsd; while (errno = 0, - 0 < (val = getmnt (&offset, &fsd, sizeof (fsd), NOSTAT_MANY, - (char *) 0))) + 0 < (val = getmnt (&offset, &fsd, sizeof (fsd), NOSTAT_MANY, + (char *) 0))) { - me = xmalloc (sizeof *me); - me->me_devname = xstrdup (fsd.fd_req.devname); - me->me_mountdir = xstrdup (fsd.fd_req.path); - me->me_type = gt_names[fsd.fd_req.fstype]; - 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 = fsd.fd_req.dev; - - /* Add to the linked list. */ - *mtail = me; - mtail = &me->me_next; + me = xmalloc (sizeof *me); + me->me_devname = xstrdup (fsd.fd_req.devname); + me->me_mountdir = xstrdup (fsd.fd_req.path); + me->me_mntroot = NULL; + me->me_type = gt_names[fsd.fd_req.fstype]; + 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 = fsd.fd_req.dev; + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; } if (val < 0) goto free_then_fail; @@ -542,7 +728,7 @@ read_file_system_list (bool need_fs_type) if (lstat (name, &statbuf) >= 0 && S_ISDIR (statbuf.st_mode)) { - struct rootdir_entry *re = xmalloc (sizeof *re); + struct rootdir_entry *re = xmalloc (sizeof *re); re->name = name; re->dev = statbuf.st_dev; re->ino = statbuf.st_ino; @@ -568,11 +754,13 @@ read_file_system_list (bool need_fs_type) if (re->dev == fi.dev && re->ino == fi.root) break; - me = xmalloc (sizeof *me); - me->me_devname = xstrdup (fi.device_name[0] != '\0' ? fi.device_name : fi.fsh_name); + me = xmalloc (sizeof *me); + me->me_devname = xstrdup (fi.device_name[0] != '\0' + ? fi.device_name : fi.fsh_name); me->me_mountdir = xstrdup (re != NULL ? re->name : fi.fsh_name); + me->me_mntroot = NULL; me->me_type = xstrdup (fi.fsh_name); - me->me_type_malloced = 1; + me->me_type_malloced = 1; me->me_dev = fi.dev; me->me_dummy = 0; me->me_remote = (fi.flags & B_FS_IS_SHARED) != 0; @@ -593,15 +781,15 @@ read_file_system_list (bool need_fs_type) } #endif /* MOUNTED_FS_STAT_DEV */ -#if defined MOUNTED_GETFSSTAT /* __alpha running OSF_1 */ +#if defined MOUNTED_GETFSSTAT /* __alpha running OSF_1 */ { int numsys, counter; size_t bufsize; struct statfs *stats; - numsys = getfsstat ((struct statfs *)0, 0L, MNT_NOWAIT); + numsys = getfsstat (NULL, 0L, MNT_NOWAIT); if (numsys < 0) - return (NULL); + return NULL; if (SIZE_MAX / sizeof *stats <= numsys) xalloc_die (); @@ -611,24 +799,25 @@ read_file_system_list (bool need_fs_type) if (numsys < 0) { - free (stats); - return (NULL); + free (stats); + return NULL; } for (counter = 0; counter < numsys; counter++) { - me = xmalloc (sizeof *me); - me->me_devname = xstrdup (stats[counter].f_mntfromname); - me->me_mountdir = xstrdup (stats[counter].f_mntonname); - me->me_type = xstrdup (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. */ - - /* Add to the linked list. */ - *mtail = me; - mtail = &me->me_next; + me = xmalloc (sizeof *me); + me->me_devname = xstrdup (stats[counter].f_mntfromname); + me->me_mountdir = xstrdup (stats[counter].f_mntonname); + me->me_mntroot = NULL; + me->me_type = xstrdup (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. */ + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; } free (stats); @@ -647,47 +836,48 @@ read_file_system_list (bool need_fs_type) while (fread (&mnt, sizeof mnt, 1, fp) > 0) { - me = xmalloc (sizeof *me); -# ifdef GETFSTYP /* SVR3. */ - me->me_devname = xstrdup (mnt.mt_dev); + me = xmalloc (sizeof *me); +# ifdef GETFSTYP /* SVR3. */ + me->me_devname = xstrdup (mnt.mt_dev); # else - me->me_devname = xmalloc (strlen (mnt.mt_dev) + 6); - strcpy (me->me_devname, "/dev/"); - strcpy (me->me_devname + 5, mnt.mt_dev); + me->me_devname = xmalloc (strlen (mnt.mt_dev) + 6); + strcpy (me->me_devname, "/dev/"); + strcpy (me->me_devname + 5, mnt.mt_dev); # endif - me->me_mountdir = xstrdup (mnt.mt_filsys); - me->me_dev = (dev_t) -1; /* Magic; means not known yet. */ - me->me_type = ""; - me->me_type_malloced = 0; -# ifdef GETFSTYP /* SVR3. */ - if (need_fs_type) - { - 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 = xstrdup (typebuf); - me->me_type_malloced = 1; - } - } + me->me_mountdir = xstrdup (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; +# ifdef GETFSTYP /* SVR3. */ + if (need_fs_type) + { + 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 = xstrdup (typebuf); + me->me_type_malloced = 1; + } + } # endif - me->me_dummy = ME_DUMMY (me->me_devname, me->me_type); - me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + me->me_dummy = ME_DUMMY (me->me_devname, me->me_type); + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); - /* Add to the linked list. */ - *mtail = me; - mtail = &me->me_next; + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; } if (ferror (fp)) { - /* The last fread() call must have failed. */ - int saved_errno = errno; - fclose (fp); - errno = saved_errno; - goto free_then_fail; + /* The last fread() call must have failed. */ + int saved_errno = errno; + fclose (fp); + errno = saved_errno; + goto free_then_fail; } if (fclose (fp) == EOF) @@ -695,29 +885,30 @@ read_file_system_list (bool need_fs_type) } #endif /* MOUNTED_FREAD || MOUNTED_FREAD_FSTYP. */ -#ifdef MOUNTED_GETMNTTBL /* DolphinOS goes its own way. */ +#ifdef MOUNTED_GETMNTTBL /* DolphinOS goes its own way. */ { struct mntent **mnttbl = getmnttbl (), **ent; - for (ent=mnttbl;*ent;ent++) + for (ent = mnttbl; *ent; ent++) { - me = xmalloc (sizeof *me); - me->me_devname = xstrdup ( (*ent)->mt_resource); - me->me_mountdir = xstrdup ( (*ent)->mt_directory); - me->me_type = xstrdup ((*ent)->mt_fstype); - 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. */ - - /* Add to the linked list. */ - *mtail = me; - mtail = &me->me_next; + me = xmalloc (sizeof *me); + me->me_devname = xstrdup ((*ent)->mt_resource); + me->me_mountdir = xstrdup ((*ent)->mt_directory); + me->me_mntroot = NULL; + me->me_type = xstrdup ((*ent)->mt_fstype); + 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. */ + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; } endmnttbl (); } #endif -#ifdef MOUNTED_GETMNTENT2 /* SVR4. */ +#ifdef MOUNTED_GETMNTENT2 /* SVR4. */ { struct mnttab mnt; char *table = MNTTAB; @@ -736,19 +927,19 @@ read_file_system_list (bool need_fs_type) lockfd = open (MNTTAB_LOCK, O_RDONLY); if (0 <= lockfd) { - 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; - } + 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; @@ -760,23 +951,24 @@ read_file_system_list (bool need_fs_type) ret = errno; else { - while ((ret = getmntent (fp, &mnt)) == 0) - { - me = xmalloc (sizeof *me); - me->me_devname = xstrdup (mnt.mnt_special); - me->me_mountdir = xstrdup (mnt.mnt_mountp); - me->me_type = xstrdup (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); - - /* Add to the linked list. */ - *mtail = me; - mtail = &me->me_next; - } - - ret = fclose (fp) == EOF ? errno : 0 < ret ? 0 : -1; + while ((ret = getmntent (fp, &mnt)) == 0) + { + me = xmalloc (sizeof *me); + me->me_devname = xstrdup (mnt.mnt_special); + me->me_mountdir = xstrdup (mnt.mnt_mountp); + me->me_mntroot = NULL; + me->me_type = xstrdup (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); + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; + } + + ret = fclose (fp) == EOF ? errno : 0 < ret ? 0 : -1; } if (0 <= lockfd && close (lockfd) != 0) @@ -784,102 +976,154 @@ read_file_system_list (bool need_fs_type) if (0 <= ret) { - errno = ret; - goto free_then_fail; + errno = ret; + goto free_then_fail; } } #endif /* MOUNTED_GETMNTENT2. */ -#ifdef MOUNTED_VMOUNT /* AIX. */ +#ifdef MOUNTED_VMOUNT /* AIX. */ { int bufsize; - char *entries, *thisent; + void *entries; + char *thisent; struct vmount *vmp; int n_entries; int i; /* Ask how many bytes to allocate for the mounted file system info. */ - if (mntctl (MCTL_QUERY, sizeof bufsize, (struct vmount *) &bufsize) != 0) + entries = &bufsize; + if (mntctl (MCTL_QUERY, sizeof bufsize, entries) != 0) return NULL; entries = xmalloc (bufsize); /* Get the list of mounted file systems. */ - n_entries = mntctl (MCTL_QUERY, bufsize, (struct vmount *) entries); + n_entries = mntctl (MCTL_QUERY, bufsize, entries); if (n_entries < 0) { - int saved_errno = errno; - free (entries); - errno = saved_errno; - return NULL; + int saved_errno = errno; + free (entries); + errno = saved_errno; + return NULL; } for (i = 0, thisent = entries; - i < n_entries; - i++, thisent += vmp->vmt_length) + i < n_entries; + i++, thisent += vmp->vmt_length) { - char *options, *ignore; - - vmp = (struct vmount *) thisent; - me = xmalloc (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 = xmalloc (strlen (host) + strlen (dir) + 2); - strcpy (me->me_devname, host); - strcat (me->me_devname, ":"); - strcat (me->me_devname, dir); - } - else - { - me->me_remote = 0; - me->me_devname = xstrdup (thisent + - vmp->vmt_data[VMT_OBJECT].vmt_off); - } - me->me_mountdir = xstrdup (thisent + vmp->vmt_data[VMT_STUB].vmt_off); - me->me_type = xstrdup (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. */ - - /* Add to the linked list. */ - *mtail = me; - mtail = &me->me_next; + char *options, *ignore; + + vmp = (struct vmount *) thisent; + me = xmalloc (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 = xmalloc (strlen (host) + strlen (dir) + 2); + strcpy (me->me_devname, host); + strcat (me->me_devname, ":"); + strcat (me->me_devname, dir); + } + else + { + me->me_remote = 0; + me->me_devname = xstrdup (thisent + + vmp->vmt_data[VMT_OBJECT].vmt_off); + } + me->me_mountdir = xstrdup (thisent + vmp->vmt_data[VMT_STUB].vmt_off); + me->me_mntroot = NULL; + me->me_type = xstrdup (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. */ + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; } free (entries); } #endif /* MOUNTED_VMOUNT. */ +#ifdef MOUNTED_INTERIX_STATVFS + { + 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 = xmalloc (sizeof *me); + me->me_devname = xstrdup (dev.f_mntfromname); + me->me_mountdir = xstrdup (dev.f_mntonname); + me->me_mntroot = NULL; + me->me_type = xstrdup (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. */ + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; + } + } + closedir (dirp); + } +#endif /* MOUNTED_INTERIX_STATVFS */ + *mtail = NULL; return mount_list; - free_then_fail: + free_then_fail: _GL_UNUSED_LABEL { int saved_errno = errno; *mtail = NULL; while (mount_list) { - me = mount_list->me_next; - free (mount_list->me_devname); - free (mount_list->me_mountdir); - if (mount_list->me_type_malloced) - free (mount_list->me_type); - free (mount_list); - mount_list = me; + me = mount_list->me_next; + free_mount_entry (mount_list); + mount_list = me; } errno = saved_errno; return NULL; } } + +/* Free a mount entry as returned from read_file_system_list (). */ + +void free_mount_entry (struct mount_entry *me) +{ + free (me->me_devname); + free (me->me_mountdir); + free (me->me_mntroot); + if (me->me_type_malloced) + free (me->me_type); + free (me); +} |