X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=utils%2Fmount%2Fmount.c;h=b1ff6a4f9129a00cc53a95d20ca4c349e4ff564a;hp=ca87e3d1b7fb60bc04d7e3504a7bcb4985e79b38;hb=6dad4d589f13ba9b871e296faf55b0f98fed9eb3;hpb=d2d6efcfdd4a2decf471202efad32cb26dfdb925 diff --git a/utils/mount/mount.c b/utils/mount/mount.c index ca87e3d..b1ff6a4 100644 --- a/utils/mount/mount.c +++ b/utils/mount/mount.c @@ -28,6 +28,7 @@ #include #include #include +#include #include "fstab.h" #include "xcommon.h" @@ -74,6 +75,14 @@ struct opt_map { int mask; /* flag mask value */ }; +/* Custom mount options for our own purposes. */ +/* Maybe these should now be freed for kernel use again */ +#define MS_DUMMY 0x00000000 +#define MS_USERS 0x40000000 +#define MS_USER 0x20000000 +#define MS_OWNER 0x10000000 +#define MS_GROUP 0x08000000 + static const struct opt_map opt_map[] = { { "defaults", 0, 0, 0 }, /* default options */ { "ro", 1, 0, MS_RDONLY }, /* read-only */ @@ -90,6 +99,18 @@ static const struct opt_map opt_map[] = { { "remount", 0, 0, MS_REMOUNT}, /* Alter flags of mounted FS */ { "bind", 0, 0, MS_BIND }, /* Remount part of tree elsewhere */ { "rbind", 0, 0, MS_BIND|MS_REC }, /* Idem, plus mounted subtrees */ + { "auto", 0, 0, MS_DUMMY }, /* Can be mounted using -a */ + { "noauto", 0, 0, MS_DUMMY }, /* Can only be mounted explicitly */ + { "users", 0, 0, MS_USERS }, /* Allow ordinary user to mount */ + { "nousers", 0, 0, MS_USERS }, /* Forbid ordinary user to mount */ + { "user", 0, 0, MS_USER }, /* Allow ordinary user to mount */ + { "nouser", 0, 0, MS_USER }, /* Forbid ordinary user to mount */ + { "owner", 0, 0, MS_OWNER }, /* Let the owner of the device mount */ + { "noowner", 0, 0, MS_OWNER }, /* Device owner has no special privs */ + { "group", 0, 0, MS_GROUP }, /* Let the group of the device mount */ + { "nogroup", 0, 0, MS_GROUP }, /* Device group has no special privs */ + { "_netdev", 0, 0, MS_DUMMY}, /* Device requires network */ + { "comment", 0, 0, MS_DUMMY}, /* fstab comment only (kudzu,_netdev)*/ /* add new options here */ #ifdef MS_NOSUB @@ -104,6 +125,7 @@ static const struct opt_map opt_map[] = { { "mand", 0, 0, MS_MANDLOCK }, /* Allow mandatory locks on this FS */ { "nomand", 0, 1, MS_MANDLOCK }, /* Forbid mandatory locks on this FS */ #endif + { "loop", 1, 0, MS_DUMMY }, /* use a loop device */ #ifdef MS_NOATIME { "atime", 0, 1, MS_NOATIME }, /* Update access time */ { "noatime", 0, 0, MS_NOATIME }, /* Do not update access time */ @@ -121,6 +143,12 @@ static char * fix_opts_string (int flags, const char *extra_opts) { char *new_opts; new_opts = xstrdup((flags & MS_RDONLY) ? "ro" : "rw"); + if (flags & MS_USER) { + struct passwd *pw = getpwuid(getuid()); + if(pw) + new_opts = xstrconcat3(new_opts, ",user=", pw->pw_name); + } + for (om = opt_map; om->opt != NULL; om++) { if (om->skip) continue; @@ -132,9 +160,20 @@ static char * fix_opts_string (int flags, const char *extra_opts) { if (extra_opts && *extra_opts) { new_opts = xstrconcat3(new_opts, ",", extra_opts); } + return new_opts; } +void copy_mntent(struct mntent *ment, nfs_mntent_t *nment) +{ + /* Not sure why nfs_mntent_t should exist */ + strcpy(nment->mnt_fsname, ment->mnt_fsname); + strcpy(nment->mnt_dir, ment->mnt_dir); + strcpy(nment->mnt_type, ment->mnt_type); + strcpy(nment->mnt_opts, ment->mnt_opts); + nment->mnt_freq = ment->mnt_freq; + nment->mnt_passno = ment->mnt_passno; +} int add_mtab(char *fsname, char *mount_point, char *fstype, int flags, char *opts, int freq, int passno) { @@ -146,8 +185,16 @@ int add_mtab(char *fsname, char *mount_point, char *fstype, int flags, char *opt ment.mnt_dir = mount_point; ment.mnt_type = fstype; ment.mnt_opts = fix_opts_string(flags, opts); - ment.mnt_freq = 0; - ment.mnt_passno= 0; + ment.mnt_freq = freq; + ment.mnt_passno= passno; + + if(flags & MS_REMOUNT) { + nfs_mntent_t nment; + + copy_mntent(&ment, &nment); + update_mtab(nment.mnt_dir, &nment); + return 0; + } if ((fd = open(MOUNTED"~", O_RDWR|O_CREAT|O_EXCL, 0600)) == -1) { fprintf(stderr, "Can't get "MOUNTED"~ lock file"); @@ -246,16 +293,16 @@ static void mount_error(char *node) { switch(errno) { case ENOTDIR: - printf("%s: mount point %s is not a directory\n", progname, node); + fprintf(stderr, "%s: mount point %s is not a directory\n", progname, node); break; case EBUSY: - printf("%s: %s is already mounted or busy\n", progname, node); + fprintf(stderr, "%s: %s is already mounted or busy\n", progname, node); break; case ENOENT: - printf("%s: mount point %s does not exist\n", progname, node); + fprintf(stderr, "%s: mount point %s does not exist\n", progname, node); break; default: - printf("%s: %s\n", progname, strerror(errno)); + fprintf(stderr, "%s: %s\n", progname, strerror(errno)); } } @@ -269,11 +316,6 @@ int main(int argc, char *argv[]) if ((p = strrchr(progname, '/')) != NULL) progname = p+1; - if (getuid() != 0) { - printf("%s: only root can do that.\n", progname); - exit(1); - } - if(!strncmp(progname, "umount", strlen("umount"))) { if(argc < 2) { umount_usage(); @@ -358,6 +400,11 @@ int main(int argc, char *argv[]) parse_opts(mount_opts, &flags, &extra_opts); + if (getuid() != 0 && !(flags & MS_USERS) && !(flags & MS_USER)) { + fprintf(stderr, "%s: permission denied.\n", progname); + exit(1); + } + if (!strcmp(progname, "mount.nfs4") || nfs_mount_vers == 4) { nfs_mount_vers = 4; mnt_err = nfs4mount(spec, mount_point, &flags, &extra_opts, &mount_opts, 0); @@ -370,16 +417,19 @@ int main(int argc, char *argv[]) } if (!mnt_err && !fake) { - mnt_err = do_mount_syscall(spec, mount_point, nfs_mount_vers == 4 ? "nfs4" : "nfs", flags, mount_opts); + if(!(flags & MS_REMOUNT)) { + mnt_err = do_mount_syscall(spec, mount_point, + nfs_mount_vers == 4 ? "nfs4" : "nfs", flags, mount_opts); - if(mnt_err) { - mount_error(mount_point); - exit(-1); + if(mnt_err) { + mount_error(mount_point); + exit(-1); + } } - - if(!nomtab) + if(!nomtab) { add_mtab(spec, mount_point, nfs_mount_vers == 4 ? "nfs4" : "nfs", flags, extra_opts, 0, 0); + } } return 0;