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- Make lf_print static and move its prototype into kern_lockf.c

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- Protect all of the advlock code with Giant as some filesystems
   may not be entering with Giant held now.

Sponsored by:	Isilon Systems, Inc.
This commit is contained in:
Jeff Roberson 2005-01-25 10:15:26 +00:00
parent b58635504c
commit 013e6650ca
2 changed files with 40 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
sys/kern/kern_lockf.c
View File

@ -82,6 +82,10 @@ static int lf_getlock(struct lockf *, struct flock *);
static int lf_setlock(struct lockf *);
static void lf_split(struct lockf *, struct lockf *);
static void lf_wakelock(struct lockf *);
#ifdef LOCKF_DEBUG
static void lf_print(char *, struct lockf *);
static void lf_printlist(char *, struct lockf *);
#endif
/*
* Advisory record locking support
@ -103,6 +107,7 @@ lf_advlock(ap, head, size)
off_t start, end, oadd;
int error;
mtx_lock(&Giant);
/*
* Convert the flock structure into a start and end.
*/
@ -119,29 +124,40 @@ lf_advlock(ap, head, size)
case SEEK_END:
if (size > OFF_MAX ||
(fl->l_start > 0 && size > OFF_MAX - fl->l_start))
return (EOVERFLOW);
(fl->l_start > 0 && size > OFF_MAX - fl->l_start)) {
error = EOVERFLOW;
goto out;
}
start = size + fl->l_start;
break;
default:
return (EINVAL);
error = EINVAL;
goto out;
}
if (start < 0) {
error = EINVAL;
goto out;
}
if (start < 0)
return (EINVAL);
if (fl->l_len < 0) {
if (start == 0)
return (EINVAL);
if (start == 0) {
error = EINVAL;
goto out;
}
end = start - 1;
start += fl->l_len;
if (start < 0)
return (EINVAL);
if (start < 0) {
error = EINVAL;
goto out;
}
} else if (fl->l_len == 0)
end = -1;
else {
oadd = fl->l_len - 1;
if (oadd > OFF_MAX - start)
return (EOVERFLOW);
if (oadd > OFF_MAX - start) {
error = EOVERFLOW;
goto out;
}
end = start + oadd;
}
/*
@ -150,7 +166,8 @@ lf_advlock(ap, head, size)
if (*head == (struct lockf *)0) {
if (ap->a_op != F_SETLK) {
fl->l_type = F_UNLCK;
return (0);
error = 0;
goto out;
}
}
/*
@ -177,23 +194,28 @@ lf_advlock(ap, head, size)
*/
switch(ap->a_op) {
case F_SETLK:
return (lf_setlock(lock));
error = lf_setlock(lock);
goto out;
case F_UNLCK:
error = lf_clearlock(lock);
FREE(lock, M_LOCKF);
return (error);
goto out;
case F_GETLK:
error = lf_getlock(lock, fl);
FREE(lock, M_LOCKF);
return (error);
goto out;
default:
free(lock, M_LOCKF);
return (EINVAL);
error = EINVAL;
goto out;
}
/* NOTREACHED */
out:
mtx_unlock(&Giant);
return (error);
}
/*
@ -760,7 +782,7 @@ lf_wakelock(listhead)
/*
* Print out a lock.
*/
void
static void
lf_print(tag, lock)
char *tag;
register struct lockf *lock;
@ -792,7 +814,7 @@ lf_print(tag, lock)
printf("\n");
}
void
static void
lf_printlist(tag, lock)
char *tag;
struct lockf *lock;

5
sys/sys/lockf.h
View File

@ -70,9 +70,4 @@ struct lockf {
int lf_advlock(struct vop_advlock_args *, struct lockf **, u_quad_t);
#ifdef LOCKF_DEBUG
void lf_print(char *, struct lockf *);
void lf_printlist(char *, struct lockf *);
#endif
#endif /* !_SYS_LOCKF_H_ */