git: c72372c693b3 - main - Update fsck(8) to ignore failures from a check program for a filesystem when the fstab(5) entry for the filesystem has the "failok" attribute.
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Date: Thu, 16 Dec 2021 00:53:58 UTC
The branch main has been updated by mckusick:
URL: https://cgit.FreeBSD.org/src/commit/?id=c72372c693b36058b58a525981e833515ce8e441
commit c72372c693b36058b58a525981e833515ce8e441
Author: Kirk McKusick <mckusick@FreeBSD.org>
AuthorDate: 2021-12-16 00:51:55 +0000
Commit: Kirk McKusick <mckusick@FreeBSD.org>
CommitDate: 2021-12-16 00:53:46 +0000
Update fsck(8) to ignore failures from a check program for a filesystem
when the fstab(5) entry for the filesystem has the "failok" attribute.
Reviewed by: kib
PR: 246201
MFC after: 2 weeks
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D33424
---
sbin/fsck/fsck.c | 3 +++
sbin/fsck/fsutil.c | 39 +++++++++++++++++++++++++++++++++++++++
sbin/fsck/fsutil.h | 7 +++----
sbin/fsck/preen.c | 24 +++++++++++++++---------
4 files changed, 60 insertions(+), 13 deletions(-)
diff --git a/sbin/fsck/fsck.c b/sbin/fsck/fsck.c
index 84d2e2fe422f..bb053fe56253 100644
--- a/sbin/fsck/fsck.c
+++ b/sbin/fsck/fsck.c
@@ -254,6 +254,9 @@ isok(struct fstab *fs)
return (0);
if (!selected(fs->fs_vfstype))
return (0);
+ /* If failok, always check now */
+ if (getfsopt(fs, "failok"))
+ return (1);
/*
* If the -B flag has been given, then process the needed
* background checks. Background checks cannot be run on
diff --git a/sbin/fsck/fsutil.c b/sbin/fsck/fsutil.c
index 012bd434dce6..9644697e2530 100644
--- a/sbin/fsck/fsutil.c
+++ b/sbin/fsck/fsutil.c
@@ -42,6 +42,7 @@ __FBSDID("$FreeBSD$");
#include <sys/mount.h>
#include <err.h>
+#include <fstab.h>
#include <paths.h>
#include <stdarg.h>
#include <stdio.h>
@@ -55,6 +56,44 @@ static int preen = 0;
static void vmsg(int, const char *, va_list) __printflike(2, 0);
+/*
+ * The getfsopt() function checks whether an option is present in
+ * an fstab(5) fs_mntops entry. There are six possible cases:
+ *
+ * fs_mntops getfsopt result
+ * rw,foo foo true
+ * rw,nofoo nofoo true
+ * rw,nofoo foo false
+ * rw,foo nofoo false
+ * rw foo false
+ * rw nofoo false
+ *
+ * This function should be part of and documented in getfsent(3).
+ */
+int
+getfsopt(struct fstab *fs, const char *option)
+{
+ int negative, found;
+ char *opt, *optbuf;
+
+ if (option[0] == 'n' && option[1] == 'o') {
+ negative = 1;
+ option += 2;
+ } else
+ negative = 0;
+ optbuf = strdup(fs->fs_mntops);
+ found = 0;
+ for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) {
+ if (opt[0] == 'n' && opt[1] == 'o') {
+ if (!strcasecmp(opt + 2, option))
+ found = negative;
+ } else if (!strcasecmp(opt, option))
+ found = !negative;
+ }
+ free(optbuf);
+ return (found);
+}
+
void
setcdevname(const char *cd, int pr)
{
diff --git a/sbin/fsck/fsutil.h b/sbin/fsck/fsutil.h
index c6300a0cc0c4..8bb9ddb90d6e 100644
--- a/sbin/fsck/fsutil.h
+++ b/sbin/fsck/fsutil.h
@@ -28,6 +28,9 @@
* $FreeBSD$
*/
+int checkfstab(int, int (*)(struct fstab *),
+ int (*) (const char *, const char *, const char *, const char *, pid_t *));
+int getfsopt(struct fstab *, const char *);
void pfatal(const char *, ...) __printflike(1, 2);
void pwarn(const char *, ...) __printflike(1, 2);
void perr(const char *, ...) __printflike(1, 2);
@@ -46,7 +49,3 @@ char *estrdup(const char *);
#define CHECK_BACKGRD 0x0008
#define DO_BACKGRD 0x0010
#define CHECK_CLEAN 0x0020
-
-struct fstab;
-int checkfstab(int, int (*)(struct fstab *),
- int (*) (const char *, const char *, const char *, const char *, pid_t *));
diff --git a/sbin/fsck/preen.c b/sbin/fsck/preen.c
index e40ec5d4fb91..c8a36a608695 100644
--- a/sbin/fsck/preen.c
+++ b/sbin/fsck/preen.c
@@ -62,6 +62,7 @@ struct partentry {
char *p_devname; /* device name */
char *p_mntpt; /* mount point */
char *p_type; /* file system type */
+ int p_failok; /* failok option set */
};
static TAILQ_HEAD(part, partentry) badh;
@@ -78,7 +79,7 @@ static TAILQ_HEAD(disk, diskentry) diskh;
static int nrun = 0, ndisks = 0;
static struct diskentry *finddisk(const char *);
-static void addpart(const char *, const char *, const char *);
+static void addpart(const char *, const char *, const char *, const int);
static int startdisk(struct diskentry *,
int (*)(const char *, const char *, const char *, const char *, pid_t *));
static void printpart(void);
@@ -132,7 +133,6 @@ checkfstab(int flags, int (*docheck)(struct fstab *),
}
sumstatus = (*checkit)(fs->fs_vfstype,
name, fs->fs_file, NULL, NULL);
-
if (sumstatus)
return (sumstatus);
continue;
@@ -143,7 +143,8 @@ checkfstab(int flags, int (*docheck)(struct fstab *),
sumstatus |= 8;
continue;
}
- addpart(fs->fs_vfstype, name, fs->fs_file);
+ addpart(fs->fs_vfstype, name, fs->fs_file,
+ getfsopt(fs, "failok"));
}
if ((flags & CHECK_PREEN) == 0 || passno == 1 ||
@@ -172,12 +173,17 @@ checkfstab(int flags, int (*docheck)(struct fstab *),
continue;
}
- if (WIFEXITED(status))
+ p = TAILQ_FIRST(&d->d_part);
+
+ if (WIFEXITED(status) == 0) {
+ retcode = 0;
+ } else if (p->p_failok == 0) {
retcode = WEXITSTATUS(status);
- else
+ } else {
retcode = 0;
-
- p = TAILQ_FIRST(&d->d_part);
+ fprintf(stderr, "%s: failok SPECIFIED, FSCK "
+ "ERROR(S) IGNORED\n", p->p_devname);
+ }
if (flags & (CHECK_DEBUG|CHECK_VERBOSE))
(void) printf("done %s: %s (%s) = 0x%x\n",
@@ -243,7 +249,6 @@ checkfstab(int flags, int (*docheck)(struct fstab *),
return (0);
}
-
static struct diskentry *
finddisk(const char *name)
{
@@ -297,7 +302,7 @@ printpart(void)
static void
-addpart(const char *type, const char *dev, const char *mntpt)
+addpart(const char *type, const char *dev, const char *mntpt, const int failok)
{
struct diskentry *d = finddisk(dev);
struct partentry *p;
@@ -312,6 +317,7 @@ addpart(const char *type, const char *dev, const char *mntpt)
p->p_devname = estrdup(dev);
p->p_mntpt = estrdup(mntpt);
p->p_type = estrdup(type);
+ p->p_failok = failok;
TAILQ_INSERT_TAIL(&d->d_part, p, p_entries);
}