diff options
| author | antoine <antoine@FreeBSD.org> | 2008-03-08 22:02:21 +0000 |
|---|---|---|
| committer | antoine <antoine@FreeBSD.org> | 2008-03-08 22:02:21 +0000 |
| commit | 514f31f40ed28fea8fdc190c743417debb0d03b3 (patch) | |
| tree | a5c6d546b6b95056f3d9779f9c1afae2cec004f6 /sys/kern/kern_descrip.c | |
| parent | 587a314ce88f943ab58c211714655de88ddbdd25 (diff) | |
| download | FreeBSD-src-514f31f40ed28fea8fdc190c743417debb0d03b3.zip FreeBSD-src-514f31f40ed28fea8fdc190c743417debb0d03b3.tar.gz | |
Introduce a new F_DUP2FD command to fcntl(2), for compatibility with
Solaris and AIX.
fcntl(fd, F_DUP2FD, arg) and dup2(fd, arg) are functionnaly equivalent.
Document it.
Add some regression tests (identical to the dup2(2) regression tests).
PR: 120233
Submitted by: Jukka Ukkonen
Approved by: rwaston (mentor)
MFC after: 1 month
Diffstat (limited to 'sys/kern/kern_descrip.c')
| -rw-r--r-- | sys/kern/kern_descrip.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/kern/kern_descrip.c b/sys/kern/kern_descrip.c index 7025587..5174c15 100644 --- a/sys/kern/kern_descrip.c +++ b/sys/kern/kern_descrip.c @@ -397,6 +397,11 @@ kern_fcntl(struct thread *td, int fd, int cmd, intptr_t arg) error = do_dup(td, DUP_VARIABLE, fd, newmin, td->td_retval); break; + case F_DUP2FD: + tmp = arg; + error = do_dup(td, DUP_FIXED, fd, tmp, td->td_retval); + break; + case F_GETFD: FILEDESC_SLOCK(fdp); if ((fp = fdtofp(fd, fdp)) == NULL) { @@ -633,7 +638,7 @@ kern_fcntl(struct thread *td, int fd, int cmd, intptr_t arg) } /* - * Common code for dup, dup2, and fcntl(F_DUPFD). + * Common code for dup, dup2, fcntl(F_DUPFD) and fcntl(F_DUP2FD). */ static int do_dup(struct thread *td, enum dup_type type, int old, int new, |
