diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libc/stdlib/Makefile.inc | 3 | ||||
| -rw-r--r-- | lib/libc/stdlib/_Exit.c | 26 | ||||
| -rw-r--r-- | lib/libc/stdlib/exit.3 | 47 |
3 files changed, 64 insertions, 12 deletions
diff --git a/lib/libc/stdlib/Makefile.inc b/lib/libc/stdlib/Makefile.inc index e24eb8d4a5b..80d3c221128 100644 --- a/lib/libc/stdlib/Makefile.inc +++ b/lib/libc/stdlib/Makefile.inc @@ -10,7 +10,7 @@ SRCS+= a64l.c abort.c atexit.c atoi.c atof.c atol.c atoll.c bsearch.c \ setenv.c strtod.c strtol.c strtoll.c strtonum.c strtoul.c strtoull.c \ system.c \ tfind.c tsearch.c _rand48.c drand48.c erand48.c jrand48.c lcong48.c \ - lrand48.c mrand48.c nrand48.c seed48.c srand48.c qabs.c qdiv.c + lrand48.c mrand48.c nrand48.c seed48.c srand48.c qabs.c qdiv.c _Exit.c .if (${MACHINE_ARCH} == "m68k") SRCS+= abs.S div.c labs.c ldiv.c @@ -45,6 +45,7 @@ MAN+= a64l.3 abort.3 abs.3 alloca.3 atexit.3 atof.3 atoi.3 atol.3 atoll.3 \ qdiv.3 qsort.3 radixsort.3 rand48.3 rand.3 random.3 realpath.3 \ strtod.3 strtonum.3 strtol.3 strtoul.3 system.3 tsearch.3 +MLINKS+=exit.3 _Exit.3 MLINKS+=ecvt.3 fcvt.3 ecvt.3 gcvt.3 MLINKS+=getenv.3 setenv.3 getenv.3 unsetenv.3 getenv.3 putenv.3 MLINKS+=getopt_long.3 getopt_long_only.3 diff --git a/lib/libc/stdlib/_Exit.c b/lib/libc/stdlib/_Exit.c new file mode 100644 index 00000000000..784015a21d6 --- /dev/null +++ b/lib/libc/stdlib/_Exit.c @@ -0,0 +1,26 @@ +/* $OpenBSD: _Exit.c,v 1.1 2004/05/03 17:21:13 millert Exp $ */ + +/* + * Placed in the public domain by Todd C. Miller on January 21, 2004. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char *rcsid = "$OpenBSD: _Exit.c,v 1.1 2004/05/03 17:21:13 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include <stdlib.h> +#include <unistd.h> + +/* + * _Exit() is the ISO/ANSI C99 equivalent of the POSIX _exit() function. + * No atexit() handlers are called and no signal handlers are run. + * Whether or not stdio buffers are flushed or temporary files are removed + * is implementation-dependent. As such it is safest to *not* flush + * stdio buffers or remove temporary files. This is also consistent + * with most other implementations. + */ +void +_Exit(int status) +{ + _exit(status); +} diff --git a/lib/libc/stdlib/exit.3 b/lib/libc/stdlib/exit.3 index 8c4b2eed2c2..fa233ac75f1 100644 --- a/lib/libc/stdlib/exit.3 +++ b/lib/libc/stdlib/exit.3 @@ -29,25 +29,30 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.\" $OpenBSD: exit.3,v 1.9 2003/06/02 20:18:37 millert Exp $ +.\" $OpenBSD: exit.3,v 1.10 2004/05/03 17:21:13 millert Exp $ .\" -.Dd June 29, 1991 +.Dd January 21, 2004 .Dt EXIT 3 .Os .Sh NAME -.Nm exit +.Nm exit, _Exit .Nd perform normal program termination .Sh SYNOPSIS .Fd #include <stdlib.h> .Ft void .Fn exit "int status" +.Ft void +.Fn _Exit "int status" .Sh DESCRIPTION The .Fn exit -function terminates a process. +and +.Fn _Exit +functions terminate a process. .Pp -Before termination it performs the following functions in the -order listed: +Before termination, +.Fn exit +performs the following operations in the order listed: .Bl -enum -offset indent .It Call the functions registered with the @@ -63,9 +68,25 @@ Unlink all files created with the function. .El .Pp -Following this, +The +.Fn _Exit +function terminates without calling the functions registered with the +.Xr atexit 3 +function. +The +.Ox +implementation of +.Fn _Exit +does not flush open output streams or unlink files created with the +.Xr tmpfile 3 +function. +However, this behavior is implementation-specific. +.Pp +Lastly, .Fn exit -calls +and +.Fn _Exit +call .Xr _exit 2 . Note that typically .Xr _exit 2 @@ -75,7 +96,9 @@ on to the parent, thus negative values have less meaning. .Sh RETURN VALUES The .Fn exit -function never returns. +and +.Fn _Exit +functions never return. .Sh SEE ALSO .Xr _exit 2 , .Xr atexit 3 , @@ -85,5 +108,7 @@ function never returns. .Sh STANDARDS The .Fn exit -function conforms to -.St -ansiC . +and +.Fn _Exit +functions conform to +.St -ansiC-99 . |