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annotate toys/posix/nohup.c @ 1008:a55854bde872

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su: cleanery * make help message more like others * s/TT\.(.)Argu/TT.\1/g * move environ to toys.h * simplify failure messages * clear password before quit * not check what execve returns * -lc
author Strake <strake888@gmail.com>
date Sat, 17 Aug 2013 02:54:58 -0500
parents 144d5ba7d410
children 0752b2d58909
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
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parents: 653
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1 /* nohup.c - run commandline with SIGHUP blocked.
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2 *
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3 * Copyright 2011 Rob Landley <rob@landley.net>
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4 *
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5 * See http://opengroup.org/onlinepubs/9699919799/utilities/nohup.html
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6
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7 USE_NOHUP(NEWTOY(nohup, "<1", TOYFLAG_USR|TOYFLAG_BIN))
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8
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9 config NOHUP
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10 bool "nohup"
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11 default y
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12 help
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13 usage: nohup COMMAND [ARGS...]
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14
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15 Run a command that survives the end of its terminal.
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16 If stdin is a tty, redirect from /dev/null
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17 If stdout is a tty, redirect to file "nohup.out"
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18 */
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19
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20 #include "toys.h"
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21
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22 void nohup_main(void)
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23 {
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24 signal(SIGHUP, SIG_IGN);
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25 if (isatty(1)) {
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26 close(1);
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27 if (-1 == open("nohup.out", O_CREAT|O_APPEND|O_WRONLY,
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28 S_IRUSR|S_IWUSR ))
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29 {
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30 char *temp = getenv("HOME");
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31 temp = xmsprintf("%s/%s", temp ? temp : "", "nohup.out");
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32 xcreate(temp, O_CREAT|O_APPEND|O_WRONLY, S_IRUSR|S_IWUSR);
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33 }
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34 }
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35 if (isatty(0)) {
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36 close(0);
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37 open("/dev/null", O_RDONLY);
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38 }
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144d5ba7d410 Replace users of xexec(toys.optargs) with xexec_optargs(0) to avoid free/reuse bug during argument parsing.
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39 xexec_optargs(0);
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40 }