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| author | kib <kib@FreeBSD.org> | 2013-10-09 18:39:44 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2013-10-09 18:39:44 +0000 |
| commit | 9375280e4a91021ced232911b9805672cfb89824 (patch) | |
| tree | 0952495ecc7d27eccf7cf38fb32cec12303fb1db /sys/kern/kern_descrip.c | |
| parent | b4e2aceae64701e726130da0e4b018dcb325985a (diff) | |
| download | FreeBSD-src-9375280e4a91021ced232911b9805672cfb89824.zip FreeBSD-src-9375280e4a91021ced232911b9805672cfb89824.tar.gz | |
Reduce code duplication, introduce the getmaxfd() helper to calculate
the max filedescriptor index.
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Approved by: re (marius)
Diffstat (limited to 'sys/kern/kern_descrip.c')
| -rw-r--r-- | sys/kern/kern_descrip.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/sys/kern/kern_descrip.c b/sys/kern/kern_descrip.c index a1021e1..6bf0c60 100644 --- a/sys/kern/kern_descrip.c +++ b/sys/kern/kern_descrip.c @@ -129,6 +129,7 @@ static int fill_sem_info(struct file *fp, struct kinfo_file *kif); static int fill_shm_info(struct file *fp, struct kinfo_file *kif); static int fill_socket_info(struct socket *so, struct kinfo_file *kif); static int fill_vnode_info(struct vnode *vp, struct kinfo_file *kif); +static int getmaxfd(struct proc *p); /* * Each process has: @@ -771,6 +772,18 @@ kern_fcntl(struct thread *td, int fd, int cmd, intptr_t arg) return (error); } +static int +getmaxfd(struct proc *p) +{ + int maxfd; + + PROC_LOCK(p); + maxfd = min((int)lim_cur(p, RLIMIT_NOFILE), maxfilesperproc); + PROC_UNLOCK(p); + + return (maxfd); +} + /* * Common code for dup, dup2, fcntl(F_DUPFD) and fcntl(F_DUP2FD). */ @@ -797,9 +810,7 @@ do_dup(struct thread *td, int flags, int old, int new, return (EBADF); if (new < 0) return (flags & DUP_FCNTL ? EINVAL : EBADF); - PROC_LOCK(p); - maxfd = min((int)lim_cur(p, RLIMIT_NOFILE), maxfilesperproc); - PROC_UNLOCK(p); + maxfd = getmaxfd(p); if (new >= maxfd) return (flags & DUP_FCNTL ? EINVAL : EBADF); @@ -1563,9 +1574,7 @@ fdalloc(struct thread *td, int minfd, int *result) if (fdp->fd_freefile > minfd) minfd = fdp->fd_freefile; - PROC_LOCK(p); - maxfd = min((int)lim_cur(p, RLIMIT_NOFILE), maxfilesperproc); - PROC_UNLOCK(p); + maxfd = getmaxfd(p); /* * Search the bitmap for a free descriptor starting at minfd. @@ -1652,9 +1661,7 @@ fdavail(struct thread *td, int n) * call racct_add() from there instead of dealing with containers * here. */ - PROC_LOCK(p); - lim = min((int)lim_cur(p, RLIMIT_NOFILE), maxfilesperproc); - PROC_UNLOCK(p); + lim = getmaxfd(p); if ((i = lim - fdp->fd_nfiles) > 0 && (n -= i) <= 0) return (1); last = min(fdp->fd_nfiles, lim); |
