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vn_stat(): if va_size (u_quad_t) > OFF_MAX, return EOVERFLOW, don't copy it

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blindly to st_size
This commit is contained in:
Andrey A. Chernov 2001-08-23 17:56:48 +00:00
parent 2a31175b6e
commit 5d97bedb22
1 changed files with 4 additions and 0 deletions
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4
sys/kern/vfs_vnops.c
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@ -55,6 +55,8 @@
#include <sys/ttycom.h>
#include <sys/conf.h>
#include <machine/limits.h>
static int vn_closefile __P((struct file *fp, struct proc *p));
static int vn_ioctl __P((struct file *fp, u_long com, caddr_t data,
struct proc *p));
@ -499,6 +501,8 @@ vn_stat(vp, sb, p)
sb->st_uid = vap->va_uid;
sb->st_gid = vap->va_gid;
sb->st_rdev = vap->va_rdev;
if (vap->va_size > OFF_MAX)
return (EOVERFLOW);
sb->st_size = vap->va_size;
sb->st_atimespec = vap->va_atime;
sb->st_mtimespec = vap->va_mtime;