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mount: add libxo(3) support

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Adds --libxo to mount(8).

Differential Revision:	https://reviews.freebsd.org/D30341
This commit is contained in:
Cameron Katri 2021-09-23 22:51:30 +02:00 committed by Piotr Pawel Stefaniak
parent 67a9e76da6
commit e725ee7eb6
3 changed files with 114 additions and 55 deletions
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2
sbin/mount/Makefile
View File

@ -7,6 +7,6 @@ SRCS= mount.c mount_fs.c getmntopts.c vfslist.c
MAN= mount.8
# We do NOT install the getmntopts.3 man page.
LIBADD= util
LIBADD= util xo
.include <bsd.prog.mk>

14
sbin/mount/mount.8
View File

@ -28,7 +28,7 @@
.\" @(#)mount.8 8.8 (Berkeley) 6/16/94
.\" $FreeBSD$
.\"
.Dd August 28, 2019
.Dd May 18, 2021
.Dt MOUNT 8
.Os
.Sh NAME
@ -36,14 +36,17 @@
.Nd mount file systems
.Sh SYNOPSIS
.Nm
.Op Fl -libxo
.Op Fl adflpruvw
.Op Fl F Ar fstab
.Op Fl o Ar options
.Op Fl t Oo Cm no Oc Ns Cm Ar type Ns Op Cm , Ns Ar type ...
.Nm
.Op Fl -libxo
.Op Fl dfpruvw
.Ar special | node
.Nm
.Op Fl -libxo
.Op Fl dfpruvw
.Op Fl o Ar options
.Op Fl t Oo Cm no Oc Ns Cm Ar type Ns Op Cm , Ns Ar type ...
@ -72,6 +75,13 @@ this list is printed.
.Pp
The options are as follows:
.Bl -tag -width indent
.It Fl -libxo
Generate output via
.Xr libxo 3
in a selection of different human and machine readable formats.
See
.Xr xo_parse_args 3
for details on command line arguments.
.It Fl a
All the file systems described in
.Xr fstab 5
@ -552,6 +562,8 @@ support for a particular file system might be provided either on a static
.Xr setfacl 1 ,
.Xr nmount 2 ,
.Xr acl 3 ,
.Xr libxo 3 ,
.Xr xo_parse_args 3 ,
.Xr mac 4 ,
.Xr cd9660 5 ,
.Xr devfs 5 ,

153
sbin/mount/mount.c
View File

@ -60,11 +60,18 @@ __FBSDID("$FreeBSD$");
#include <string.h>
#include <unistd.h>
#include <libutil.h>
#include <libxo/xo.h>
#include "extern.h"
#include "mntopts.h"
#include "pathnames.h"
#define EXIT(a) { \
xo_close_container("mount"); \
xo_finish(); \
exit(a); \
}
/* `meta' options */
#define MOUNT_META_OPTION_FSTAB "fstab"
#define MOUNT_META_OPTION_CURRENT "current"
@ -146,21 +153,21 @@ exec_mountprog(const char *name, const char *execname, char *const argv[])
switch (pid = fork()) {
case -1: /* Error. */
warn("fork");
exit (1);
xo_warn("fork");
EXIT(1);
case 0: /* Child. */
/* Go find an executable. */
execvP(execname, _PATH_SYSPATH, argv);
if (errno == ENOENT) {
warn("exec %s not found", execname);
xo_warn("exec %s not found", execname);
if (execname[0] != '/') {
warnx("in path: %s", _PATH_SYSPATH);
xo_warnx("in path: %s", _PATH_SYSPATH);
}
}
exit(1);
EXIT(1);
default: /* Parent. */
if (waitpid(pid, &status, 0) < 0) {
warn("waitpid");
xo_warn("waitpid");
return (1);
}
@ -168,7 +175,7 @@ exec_mountprog(const char *name, const char *execname, char *const argv[])
if (WEXITSTATUS(status) != 0)
return (WEXITSTATUS(status));
} else if (WIFSIGNALED(status)) {
warnx("%s: %s", name, sys_siglist[WTERMSIG(status)]);
xo_warnx("%s: %s", name, sys_siglist[WTERMSIG(status)]);
return (1);
}
break;
@ -185,7 +192,7 @@ specified_ro(const char *arg)
optbuf = strdup(arg);
if (optbuf == NULL)
err(1, NULL);
xo_err(1, NULL);
for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) {
if (strcmp(opt, "ro") == 0) {
@ -220,13 +227,13 @@ restart_mountd(void)
* happened due to the bugs in pidfile(3).
*/
if (mountdpid <= 0) {
warnx("mountd pid %d, refusing to send SIGHUP", mountdpid);
xo_warnx("mountd pid %d, refusing to send SIGHUP", mountdpid);
return;
}
/* We have mountd(8) PID in mountdpid varible, let's signal it. */
if (kill(mountdpid, SIGHUP) == -1)
err(1, "signal mountd");
xo_err(1, "signal mountd");
}
int
@ -244,6 +251,12 @@ main(int argc, char *argv[])
options = NULL;
vfslist = NULL;
vfstype = "ufs";
argc = xo_parse_args(argc, argv);
if (argc < 0)
exit(1);
xo_open_container("mount");
while ((ch = getopt(argc, argv, "adF:fLlno:prt:uvw")) != -1)
switch (ch) {
case 'a':
@ -285,7 +298,7 @@ main(int argc, char *argv[])
break;
case 't':
if (vfslist != NULL)
errx(1, "only one -t option may be specified");
xo_errx(1, "only one -t option may be specified");
vfslist = makevfslist(optarg);
vfstype = optarg;
break;
@ -318,7 +331,7 @@ main(int argc, char *argv[])
case 0:
if ((mntsize = getmntinfo(&mntbuf,
verbose ? MNT_WAIT : MNT_NOWAIT)) == 0)
err(1, "getmntinfo");
xo_err(1, "getmntinfo");
if (all) {
while ((fs = getfsent()) != NULL) {
if (BADTYPE(fs->fs_type))
@ -347,12 +360,17 @@ main(int argc, char *argv[])
rval = 1;
}
} else if (fstab_style) {
xo_open_list("fstab");
for (i = 0; i < mntsize; i++) {
if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
continue;
xo_open_instance("fstab");
putfsent(&mntbuf[i]);
xo_close_instance("fstab");
}
xo_close_list("fstab");
} else {
xo_open_list("mounted");
for (i = 0; i < mntsize; i++) {
if (checkvfsname(mntbuf[i].f_fstypename,
vfslist))
@ -360,10 +378,13 @@ main(int argc, char *argv[])
if (!verbose &&
(mntbuf[i].f_flags & MNT_IGNORE) != 0)
continue;
xo_open_instance("mounted");
prmount(&mntbuf[i]);
xo_close_instance("mounted");
}
xo_close_list("mounted");
}
exit(rval);
EXIT(rval);
case 1:
if (vfslist != NULL)
usage();
@ -373,7 +394,7 @@ main(int argc, char *argv[])
mntfromname = NULL;
have_fstab = 0;
if ((mntbuf = getmntpt(*argv)) == NULL)
errx(1, "not currently mounted %s", *argv);
xo_errx(1, "not currently mounted %s", *argv);
/*
* Only get the mntflags from fstab if both mntpoint
* and mntspec are identical. Also handle the special
@ -411,10 +432,10 @@ main(int argc, char *argv[])
}
if ((fs = getfsfile(*argv)) == NULL &&
(fs = getfsspec(*argv)) == NULL)
errx(1, "%s: unknown special file or file system",
xo_errx(1, "%s: unknown special file or file system",
*argv);
if (BADTYPE(fs->fs_type))
errx(1, "%s has unknown file system type",
xo_errx(1, "%s has unknown file system type",
*argv);
rval = mountfs(fs->fs_vfstype, fs->fs_spec, fs->fs_file,
init_flags, options, fs->fs_mntops);
@ -460,7 +481,7 @@ main(int argc, char *argv[])
if (rval == 0 && getuid() == 0)
restart_mountd();
exit(rval);
EXIT(rval);
}
int
@ -537,7 +558,7 @@ append_arg(struct cpa *sa, char *arg)
sa->sz = sa->sz == 0 ? 8 : sa->sz * 2;
sa->a = realloc(sa->a, sizeof(*sa->a) * sa->sz);
if (sa->a == NULL)
errx(1, "realloc failed");
xo_errx(1, "realloc failed");
}
sa->a[++sa->c] = arg;
}
@ -553,7 +574,7 @@ mountfs(const char *vfstype, const char *spec, const char *name, int flags,
/* resolve the mountpoint with realpath(3) */
if (checkpath(name, mntpath) != 0) {
warn("%s", mntpath);
xo_warn("%s", mntpath);
return (1);
}
name = mntpath;
@ -596,12 +617,12 @@ mountfs(const char *vfstype, const char *spec, const char *name, int flags,
if (debug) {
if (use_mountprog(vfstype))
printf("exec: %s", execname);
xo_emit("{Lwc:exec}{:execname/%s}", execname);
else
printf("mount -t %s", vfstype);
xo_emit("{:execname/mount}{P: }{l:opts/-t}{P: }{l:opts/%s}", vfstype);
for (i = 1; i < mnt_argv.c; i++)
(void)printf(" %s", mnt_argv.a[i]);
(void)printf("\n");
xo_emit("{P: }{l:opts}", mnt_argv.a[i]);
xo_emit("\n");
free(optbuf);
free(mountprog);
mountprog = NULL;
@ -620,13 +641,22 @@ mountfs(const char *vfstype, const char *spec, const char *name, int flags,
if (verbose) {
if (statfs(name, &sf) < 0) {
warn("statfs %s", name);
xo_warn("statfs %s", name);
return (1);
}
if (fstab_style)
if (fstab_style) {
xo_open_list("fstab");
xo_open_instance("fstab");
putfsent(&sf);
else
xo_close_instance("fstab");
xo_close_list("fstab");
} else {
xo_open_list("mounted");
xo_open_instance("mounted");
prmount(&sf);
xo_close_instance("mounted");
xo_close_list("mounted");
}
}
return (ret);
@ -639,14 +669,15 @@ prmount(struct statfs *sfp)
unsigned int i;
struct mntoptnames *o;
struct passwd *pw;
char *fsidbuf;
(void)printf("%s on %s (%s", sfp->f_mntfromname, sfp->f_mntonname,
sfp->f_fstypename);
xo_emit("{:special}{L: on }{:node}{L: (}{:fstype}", sfp->f_mntfromname,
sfp->f_mntonname, sfp->f_fstypename);
flags = sfp->f_flags & MNT_VISFLAGMASK;
for (o = optnames; flags != 0 && o->o_opt != 0; o++)
if (flags & o->o_opt) {
(void)printf(", %s", o->o_name);
xo_emit("{D:, }{l:opts}", o->o_name);
flags &= ~o->o_opt;
}
/*
@ -654,28 +685,40 @@ prmount(struct statfs *sfp)
* or privileged non-root user.
*/
if ((flags & MNT_USER) != 0 || sfp->f_owner != 0) {
(void)printf(", mounted by ");
xo_emit("{D:, }{L:mounted by }");
if ((pw = getpwuid(sfp->f_owner)) != NULL)
(void)printf("%s", pw->pw_name);
xo_emit("{:mounter}", pw->pw_name);
else
(void)printf("%d", sfp->f_owner);
xo_emit("{:mounter}", sfp->f_owner);
}
if (verbose) {
if (sfp->f_syncwrites != 0 || sfp->f_asyncwrites != 0)
(void)printf(", writes: sync %ju async %ju",
if (sfp->f_syncwrites != 0 || sfp->f_asyncwrites != 0) {
xo_open_container("writes");
xo_emit("{D:, }{Lwc:writes}{Lw:sync}{w:sync/%ju}{Lw:async}{:async/%ju}",
(uintmax_t)sfp->f_syncwrites,
(uintmax_t)sfp->f_asyncwrites);
if (sfp->f_syncreads != 0 || sfp->f_asyncreads != 0)
(void)printf(", reads: sync %ju async %ju",
xo_close_container("writes");
}
if (sfp->f_syncreads != 0 || sfp->f_asyncreads != 0) {
xo_open_container("reads");
xo_emit("{D:, }{Lwc:reads}{Lw:sync}{w:sync/%ju}{Lw:async}{:async/%ju}",
(uintmax_t)sfp->f_syncreads,
(uintmax_t)sfp->f_asyncreads);
xo_close_container("reads");
}
if (sfp->f_fsid.val[0] != 0 || sfp->f_fsid.val[1] != 0) {
(void)printf(", fsid ");
fsidbuf = malloc(sizeof(sfp->f_fsid) * 2 + 1);
if (fsidbuf == NULL)
xo_errx(1, "malloc failed");
for (i = 0; i < sizeof(sfp->f_fsid); i++)
(void)printf("%02x", ((u_char *)&sfp->f_fsid)[i]);
sprintf(&fsidbuf[i * 2], "%02x",
((u_char *)&sfp->f_fsid)[i]);
fsidbuf[i * 2] = '\0';
xo_emit("{D:, }{Lw:fsid}{:fsid}", fsidbuf);
free(fsidbuf);
}
}
(void)printf(")\n");
xo_emit("{D:)}\n");
}
struct statfs *
@ -703,7 +746,7 @@ catopt(char *s0, const char *s1)
if (s0 && *s0) {
if (asprintf(&cp, "%s,%s", s0, s1) == -1)
errx(1, "asprintf failed");
xo_errx(1, "asprintf failed");
} else
cp = strdup(s1);
@ -758,7 +801,7 @@ mangle(char *options, struct cpa *a)
}
if (mountprog == NULL) {
errx(1, "Need value for -o mountprog");
xo_errx(1, "Need value for -o mountprog");
}
continue;
} else if (strcmp(p, "userquota") == 0) {
@ -824,7 +867,7 @@ update_options(char *opts, char *fstab, int curflags)
newopt = NULL;
for (p = expopt; (o = strsep(&p, ",")) != NULL;) {
if ((tmpopt = malloc( strlen(o) + 2 + 1 )) == NULL)
errx(1, "malloc failed");
xo_errx(1, "malloc failed");
strcpy(tmpopt, "no");
strcat(tmpopt, o);
@ -867,11 +910,11 @@ void
usage(void)
{
(void)fprintf(stderr, "%s\n%s\n%s\n",
xo_error("%s\n%s\n%s\n",
"usage: mount [-adflpruvw] [-F fstab] [-o options] [-t ufs | external_type]",
" mount [-dfpruvw] special | node",
" mount [-dfpruvw] [-o options] [-t ufs | external_type] special node");
exit(1);
EXIT(1);
}
void
@ -899,32 +942,36 @@ putfsent(struct statfs *ent)
}
l = strlen(ent->f_mntfromname);
printf("%s%s%s%s", ent->f_mntfromname,
xo_emit("{:device}{P:/%s}{P:/%s}{P:/%s}",
ent->f_mntfromname,
l < 8 ? "\t" : "",
l < 16 ? "\t" : "",
l < 24 ? "\t" : " ");
l = strlen(ent->f_mntonname);
printf("%s%s%s%s", ent->f_mntonname,
xo_emit("{:mntpoint}{P:/%s}{P:/%s}{P:/%s}",
ent->f_mntonname,
l < 8 ? "\t" : "",
l < 16 ? "\t" : "",
l < 24 ? "\t" : " ");
printf("%s\t", ent->f_fstypename);
xo_emit("{:fstype}{P:\t}", ent->f_fstypename);
l = strlen(opts);
printf("%s%s", opts,
xo_emit("{:opts}{P:/%s}", opts,
l < 8 ? "\t" : " ");
free(opts);
if ((fst = getfsspec(ent->f_mntfromname)))
printf("\t%u %u\n", fst->fs_freq, fst->fs_passno);
xo_emit("{P:\t}{n:dump/%u}{P: }{n:pass/%u}\n",
fst->fs_freq, fst->fs_passno);
else if ((fst = getfsfile(ent->f_mntonname)))
printf("\t%u %u\n", fst->fs_freq, fst->fs_passno);
xo_emit("{P:\t}{n:dump/%u}{P: }{n:pass/%u}\n",
fst->fs_freq, fst->fs_passno);
else if (strcmp(ent->f_fstypename, "ufs") == 0) {
if (strcmp(ent->f_mntonname, "/") == 0)
printf("\t1 1\n");
xo_emit("{P:\t}{n:dump/1}{P: }{n:pass/1}\n");
else
printf("\t2 2\n");
xo_emit("{P:\t}{n:dump/2}{P: }{n:pass/2}\n");
} else
printf("\t0 0\n");
xo_emit("{P:\t}{n:dump/0}{P: }{n:pass/0}\n");
}