X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=utils%2Fmount%2Fmount.c;h=94435c88030c3e91b6123cb4924acf124cfc677a;hp=e3f84a0edb98ad40652ae048160e00545702f4b8;hb=aaec79d4e3a1337dde561084445cd4a4e1857da9;hpb=66ab98cbd17f7f54edda78a470579d3ab01f35c0 diff --git a/utils/mount/mount.c b/utils/mount/mount.c index e3f84a0..94435c8 100644 --- a/utils/mount/mount.c +++ b/utils/mount/mount.c @@ -39,7 +39,6 @@ #include "nfs_mount.h" #include "nfs4_mount.h" -#include "nfsumount.h" #include "mount.h" #include "error.h" #include "network.h" @@ -50,6 +49,9 @@ int nomtab; int verbose; int sloppy; +#define FOREGROUND (0) +#define BACKGROUND (1) + static struct option longopts[] = { { "fake", 0, 0, 'f' }, { "help", 0, 0, 'h' }, @@ -64,19 +66,16 @@ static struct option longopts[] = { { NULL, 0, 0, 0 } }; -/* Map from -o and fstab option strings to the flag argument to mount(2). */ +/* + * Map from -o and fstab option strings to the flag argument to mount(2). + */ struct opt_map { - const char *opt; /* option name */ - int skip; /* skip in mtab option string */ - int inv; /* true if flag value should be inverted */ - int mask; /* flag mask value */ + const char *opt; /* option name */ + int skip; /* skip in mtab option string */ + int inv; /* true if flag value should be inverted */ + int mask; /* flag mask value */ }; -/* Custom mount options for our own purposes. */ -#define MS_DUMMY 0x00000000 -#define MS_USERS 0x40000000 -#define MS_USER 0x80000000 - static const struct opt_map opt_map[] = { { "defaults", 0, 0, 0 }, /* default options */ { "ro", 1, 0, MS_RDONLY }, /* read-only */ @@ -176,8 +175,22 @@ static void discover_nfs_mount_data_version(void) nfs_mount_data_version = NFS_MOUNT_VERSION; } -/* Try to build a canonical options string. */ -static char * fix_opts_string (int flags, const char *extra_opts) { +static void print_one(char *spec, char *node, char *type, char *opts) +{ + if (!verbose) + return; + + if (opts) + printf(_("%s on %s type %s (%s)\n"), spec, node, type, opts); + else + printf(_("%s on %s type %s\n"), spec, node, type); +} + +/* + * Build a canonical mount option string for /etc/mtab. + */ +static char *fix_opts_string(int flags, const char *extra_opts) +{ const struct opt_map *om; char *new_opts; @@ -255,29 +268,24 @@ fail_unlock: return result; } -int do_mount_syscall(char *spec, char *node, char *type, int flags, void *data) -{ - return mount(spec, node, type, flags, data); -} - -void mount_usage() +void mount_usage(void) { - printf("usage: %s remotetarget dir [-rvVwfnh] [-o nfsoptions]\n", + printf(_("usage: %s remotetarget dir [-rvVwfnsh] [-o nfsoptions]\n"), progname); - printf("options:\n"); - printf("\t-r\t\tMount file system readonly\n"); - printf("\t-v\t\tVerbose\n"); - printf("\t-V\t\tPrint version\n"); - printf("\t-w\t\tMount file system read-write\n"); - printf("\t-f\t\tFake mount, do not actually mount\n"); - printf("\t-n\t\tDo not update /etc/mtab\n"); - printf("\t-s\t\tTolerate sloppy mount options rather than failing.\n"); - printf("\t-h\t\tPrint this help\n"); - printf("\tnfsoptions\tRefer to mount.nfs(8) or nfs(5)\n\n"); + printf(_("options:\n")); + printf(_("\t-r\t\tMount file system readonly\n")); + printf(_("\t-v\t\tVerbose\n")); + printf(_("\t-V\t\tPrint version\n")); + printf(_("\t-w\t\tMount file system read-write\n")); + printf(_("\t-f\t\tFake mount, do not actually mount\n")); + printf(_("\t-n\t\tDo not update /etc/mtab\n")); + printf(_("\t-s\t\tTolerate sloppy mount options rather than fail\n")); + printf(_("\t-h\t\tPrint this help\n")); + printf(_("\tnfsoptions\tRefer to mount.nfs(8) or nfs(5)\n\n")); } -static inline void -parse_opt(const char *opt, int *mask, char *extra_opts, int len) { +static void parse_opt(const char *opt, int *mask, char *extra_opts, int len) +{ const struct opt_map *om; for (om = opt_map; om->opt != NULL; om++) { @@ -299,30 +307,35 @@ parse_opt(const char *opt, int *mask, char *extra_opts, int len) { strcat(extra_opts, opt); } -/* Take -o options list and compute 4th and 5th args to mount(2). flags - gets the standard options (indicated by bits) and extra_opts all the rest */ -static void parse_opts (const char *options, int *flags, char **extra_opts) +/* + * Convert the provided mount command-line options into the 4th & + * 5th arguments to mount(2). Output parameter "@flags" gets the + * standard options (indicated by MS_ bits), and output parameter + * "@extra_opts" gets all the filesystem-specific options. + */ +static void parse_opts(const char *options, int *flags, char **extra_opts) { if (options != NULL) { char *opts = xstrdup(options); char *opt, *p; - int len = strlen(opts) + 1; /* include room for a null */ + int len = strlen(opts) + 1; /* include room for a null */ int open_quote = 0; *extra_opts = xmalloc(len); **extra_opts = '\0'; - for (p=opts, opt=NULL; p && *p; p++) { + for (p = opts, opt = NULL; p && *p; p++) { if (!opt) - opt = p; /* begin of the option item */ + opt = p; /* begin of the option item */ if (*p == '"') - open_quote ^= 1; /* reverse the status */ + open_quote ^= 1; /* reverse the status */ if (open_quote) - continue; /* still in a quoted block */ + continue; /* still in a quoted block */ if (*p == ',') - *p = '\0'; /* terminate the option item */ + *p = '\0'; /* terminate the option item */ + /* end of option item or last item */ - if (*p == '\0' || *(p+1) == '\0') { + if (*p == '\0' || *(p + 1) == '\0') { parse_opt(opt, flags, *extra_opts, len); opt = NULL; } @@ -351,6 +364,31 @@ static int chk_mountpoint(char *mount_point) return 0; } +static int try_mount(char *spec, char *mount_point, int flags, + char *fs_type, char **extra_opts, char *mount_opts, + int fake, int nomtab, int bg) +{ + int ret; + + if (strcmp(fs_type, "nfs4") == 0) + ret = nfs4mount(spec, mount_point, flags, + extra_opts, fake, bg); + else + ret = nfsmount(spec, mount_point, flags, + extra_opts, fake, bg); + + if (ret) + return ret; + + if (!fake) + print_one(spec, mount_point, fs_type, mount_opts); + + if (!nomtab) + ret = add_mtab(spec, mount_point, fs_type, flags, *extra_opts, + 0, 0 /* these are always zero for NFS */ ); + return ret; +} + int main(int argc, char *argv[]) { int c, flags = 0, mnt_err = 1, fake = 0; @@ -362,25 +400,20 @@ int main(int argc, char *argv[]) discover_nfs_mount_data_version(); - if(!strncmp(progname, "umount", strlen("umount"))) { - if(argc < 2) { - umount_usage(); - exit(1); - } + if(!strncmp(progname, "umount", strlen("umount"))) exit(nfsumount(argc, argv)); - } - if(argv[1] && argv[1][0] == '-') { + if (argv[1] && argv[1][0] == '-') { if(argv[1][1] == 'V') printf("%s ("PACKAGE_STRING")\n", progname); else mount_usage(); - return 0; + exit(0); } if ((argc < 3)) { mount_usage(); - exit(1); + exit(EX_USAGE); } spec = argv[1]; @@ -420,13 +453,16 @@ int main(int argc, char *argv[]) case 'h': default: mount_usage(); - exit(1); + exit(EX_USAGE); } } - if (optind != argc-2) { - /* Extra non-option words at the end... */ + + /* + * Extra non-option words at the end are bogus... + */ + if (optind != argc - 2) { mount_usage(); - exit(1); + exit(EX_USAGE); } if (strcmp(progname, "mount.nfs4") == 0) @@ -443,9 +479,9 @@ int main(int argc, char *argv[]) if ((mc = getfsfile(mount_point)) == NULL || strcmp(mc->m.mnt_fsname, spec) != 0 || strcmp(mc->m.mnt_type, fs_type) != 0) { - fprintf(stderr, "%s: permission denied: no match for %s " - "found in /etc/fstab\n", progname, mount_point); - exit(1); + nfs_error(_("%s: permission denied: no match for %s " + "found in /etc/fstab"), progname, mount_point); + exit(EX_USAGE); } /* @@ -458,50 +494,55 @@ int main(int argc, char *argv[]) } mount_point = canonicalize(mount_point); - if (mount_point == NULL || - mount_point[0] != '/') { - fprintf(stderr, "%s: unknown mount point %s\n", - progname, mount_point ? : ""); - exit(1); + if (!mount_point) { + nfs_error(_("%s: no mount point provided"), progname); + exit(EX_USAGE); } - + if (mount_point[0] != '/') { + nfs_error(_("%s: unrecognized mount point %s"), + progname, mount_point); + mnt_err = EX_USAGE; + goto out; + } + parse_opts(mount_opts, &flags, &extra_opts); if (uid != 0) { - if (! (flags & (MS_USERS | MS_USER))) { - fprintf(stderr, "%s: permission denied\n", progname); - exit(1); - } + if (!(flags & (MS_USERS|MS_USER))) { + nfs_error(_("%s: permission denied"), progname); + mnt_err = EX_USAGE; + goto out; + } } - if (chk_mountpoint(mount_point)) - exit(EX_FAIL); - - if (strcmp(fs_type, "nfs4") == 0) - mnt_err = nfs4mount(spec, mount_point, &flags, &extra_opts, &mount_opts, 0); - else - mnt_err = nfsmount(spec, mount_point, &flags, - &extra_opts, &mount_opts, - 0, fake); - - if (mnt_err) - exit(EX_FAIL); + if (chk_mountpoint(mount_point)) { + mnt_err = EX_USAGE; + goto out; + } - if (!fake) { - mnt_err = do_mount_syscall(spec, mount_point, fs_type, - flags & ~(MS_USER|MS_USERS) , - mount_opts); + mnt_err = try_mount(spec, mount_point, flags, fs_type, &extra_opts, + mount_opts, fake, nomtab, FOREGROUND); + if (mnt_err == EX_BG) { + printf(_("mount: backgrounding \"%s\"\n"), spec); + fflush(stdout); - if (mnt_err) { - mount_error(spec, mount_point, errno); - exit(EX_FAIL); - } + /* + * Parent exits immediately with success. Make + * sure not to free "mount_point" + */ + if (fork() > 0) + exit(0); + + mnt_err = try_mount(spec, mount_point, flags, fs_type, + &extra_opts, mount_opts, fake, + nomtab, BACKGROUND); + if (verbose && mnt_err) + printf(_("%s: giving up \"%s\"\n"), + progname, spec); + exit(0); } - if (!nomtab) - mnt_err = add_mtab(spec, mount_point, fs_type, flags, extra_opts, - 0, 0 /* these are always zero for NFS */ ); - +out: + free(mount_point); exit(mnt_err); } -