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my_system: return errno, silence trivial error message

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Origin commit data
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Branch: ni/coolstream
Commit: d77e54fcd6
Author: Stefan Seyfried <seife@tuxbox-git.slipkontur.de>
Date: 2013-03-09 (Sat, 09 Mar 2013)


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This commit was generated by Migit
This commit is contained in:
Stefan Seyfried
2013-03-09 18:08:23 +01:00
parent 79c700fe35
commit 232dc6954e
1 changed files with 9 additions and 4 deletions
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13
src/system/helpers.cpp
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@@ -102,7 +102,8 @@ int my_system(int argc, const char *arg, ...)
{
case -1: /* can't vfork */
perror("vfork");
return -1;
ret = -errno;
goto out;
case 0: /* child process */
for(i = 3; i < maxfd; i++)
close(i);
@@ -110,17 +111,21 @@ int my_system(int argc, const char *arg, ...)
perror("my_system setsid");
if (execvp(argv[0], (char * const *)argv))
{
std::string txt = "ERROR: my_system \"" + (std::string) argv[0] + "\"";
perror(txt.c_str());
ret = -1;
if (errno != ENOENT) { /* don't complain if argv[0] only does not exist */
std::string txt = "ERROR: my_system \"" + (std::string) argv[0] + "\"";
perror(txt.c_str());
}
ret = -errno;
}
_exit (0); // terminate c h i l d proces s only
default: /* parent returns to calling process */
break;
}
/* it is probably pure luck that ret gets propagated back from child to parent */
waitpid(pid, &childExit, 0);
if(childExit != 0)
ret = childExit;
out:
va_end(args);
return ret;
}