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make pread use fget_read instead of holdfp.

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This commit is contained in:
Alfred Perlstein 2002-01-23 08:22:59 +00:00
parent d9f1ea7b2b
commit 97fa4397d3
1 changed files with 2 additions and 27 deletions
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29
sys/kern/sys_generic.c
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@ -83,30 +83,6 @@ static int dofileread __P((struct thread *, struct file *, int, void *,
static int dofilewrite __P((struct thread *, struct file *, int,
const void *, size_t, off_t, int));
struct file*
holdfp(fdp, fd, flag)
struct filedesc* fdp;
int fd, flag;
{
struct file* fp;
FILEDESC_LOCK(fdp);
if (((u_int)fd) >= fdp->fd_nfiles ||
(fp = fdp->fd_ofiles[fd]) == NULL) {
FILEDESC_UNLOCK(fdp);
return (NULL);
}
FILE_LOCK(fp);
FILEDESC_UNLOCK(fdp);
if ((fp->f_flag & flag) == 0) {
FILE_UNLOCK(fp);
return (NULL);
}
fp->f_count++;
FILE_UNLOCK(fp);
return (fp);
}
/*
* Read system call.
*/
@ -161,9 +137,8 @@ pread(td, uap)
struct file *fp;
int error;
fp = holdfp(td->td_proc->p_fd, uap->fd, FREAD);
if (fp == NULL)
return (EBADF);
if ((error = fget_read(td, uap->fd, &fp)) != 0)
return (error);
mtx_lock(&Giant);
if (fp->f_type != DTYPE_VNODE) {
error = ESPIPE;