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Use err(3).

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This commit is contained in:
Philippe Charnier 1997-07-31 06:54:45 +00:00
parent 885a85b6c1
commit 7eb436730f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=27785
2 changed files with 17 additions and 17 deletions
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10
usr.bin/nohup/nohup.1
View file

@ -41,12 +41,12 @@
.Nm nohup
.Nd invoke a command immune to hangups
.Sh SYNOPSIS
.Nm nohup
.Nm
.Ar command
.Op Ar arg ...
.Sh DESCRIPTION
The
.Nm nohup
.Nm
utility invokes
.Ar command
with
@ -75,7 +75,7 @@ The following variable is utilized by
If the output file
.Pa nohup.out
cannot be created in the current directory, the
.Nm nohup
.Nm
utility uses the directory named by
.Ev HOME
to create the file.
@ -84,7 +84,7 @@ to create the file.
.Xr signal 3
.Sh STANDARDS
The
.Nm nohup
command is expected to be
.Nm
utility is expected to be
.St -p1003.2
compatible.

24
usr.bin/nohup/nohup.c
View file

@ -32,18 +32,23 @@
*/
#ifndef lint
static char copyright[] =
static const char copyright[] =
"@(#) Copyright (c) 1989, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)nohup.c 8.1 (Berkeley) 6/6/93";
#endif
static const char rcsid[] =
"$Id$";
#endif /* not lint */
#include <sys/param.h>
#include <sys/stat.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
@ -53,7 +58,7 @@ static char sccsid[] = "@(#)nohup.c 8.1 (Berkeley) 6/6/93";
#include <unistd.h>
void dofile __P((void));
void usage __P((void));
static void usage __P((void));
int
main(argc, argv)
@ -75,9 +80,7 @@ main(argc, argv)
(void)signal(SIGQUIT, SIG_IGN);
execvp(argv[1], &argv[1]);
(void)fprintf(stderr,
"nohup: %s: %s\n", argv[1], strerror(errno));
exit(1);
err(1, "%s", argv[1]);
}
void
@ -90,7 +93,7 @@ dofile()
p = FILENAME;
if ((fd = open(p, O_RDWR|O_CREAT, S_IRUSR | S_IWUSR)) >= 0)
goto dupit;
if (p = getenv("HOME")) {
if ((p = getenv("HOME"))) {
(void)strcpy(path, p);
(void)strcat(path, "/");
(void)strcat(path, FILENAME);
@ -98,14 +101,11 @@ dofile()
O_RDWR|O_CREAT, S_IRUSR | S_IWUSR)) >= 0)
goto dupit;
}
(void)fprintf(stderr, "nohup: can't open a nohup.out file.\n");
exit(1);
errx(1, "can't open a nohup.out file");
dupit: (void)lseek(fd, (off_t)0, SEEK_END);
if (dup2(fd, STDOUT_FILENO) == -1) {
(void)fprintf(stderr, "nohup: %s\n", strerror(errno));
exit(1);
}
if (dup2(fd, STDOUT_FILENO) == -1)
err(1, NULL);
(void)fprintf(stderr, "sending output to %s\n", p);
}