diff options
Diffstat (limited to 'mdk-stage1/insmod-modutils/util/xsystem.c')
-rw-r--r-- | mdk-stage1/insmod-modutils/util/xsystem.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/mdk-stage1/insmod-modutils/util/xsystem.c b/mdk-stage1/insmod-modutils/util/xsystem.c new file mode 100644 index 000000000..edb995268 --- /dev/null +++ b/mdk-stage1/insmod-modutils/util/xsystem.c @@ -0,0 +1,51 @@ +/* Misc utility functions. + Copyright 2000 Keith Owens <kaos@ocs.com.au> + + This file is part of the Linux modutils. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by the + Free Software Foundation; either version 2 of the License, or (at your + option) any later version. + + This program is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#ident "$Id" + +#include <sys/types.h> +#include <sys/wait.h> +#include <errno.h> +#include <unistd.h> + + +/*======================================================================*/ + +/* Clone of the system() function From Steven's Advanced Programming in a Unix + * Environment. Modified to use *argv[] and execvp to avoid shell expansion + * problems, modutils runs as root so system() is unsafe. + */ + +int +xsystem(const char *file, char *const argv[]) +{ + pid_t pid; + int status; + if ((pid = fork()) < 0) + return(-1); + if (pid == 0) { + execvp(file, argv); + _exit(127); + } + while (waitpid(pid, &status, 0) < 0) { + if (errno != EINTR) + return(-1); + } + return(status); +} |