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Cope with system("").

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This commit is contained in:
Michael Brown 2006-12-08 17:07:12 +00:00
parent 69b9048e1a
commit 0a26cd2933
1 changed files with 12 additions and 6 deletions
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18
src/core/exec.c
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@ -48,14 +48,20 @@ static struct command commands_end[0] __table_end ( commands );
*/
int execv ( const char *command, char * const argv[] ) {
struct command *cmd;
int argc = 0;
assert ( argv[0] != NULL );
int argc;
/* Count number of arguments */
do {
argc++;
} while ( argv[argc] != NULL );
for ( argc = 0 ; argv[argc] ; argc++ ) {}
/* Sanity checks */
if ( ! command ) {
DBG ( "No command\n" );
return -EINVAL;
}
if ( ! argc ) {
DBG ( "%s: empty argument list\n", command );
return -EINVAL;
}
/* Reset getopt() library ready for use by the command. This
* is an artefact of the POSIX getopt() API within the context