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last_patch98 from vodz:

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Denis,

># ./busybox env - echo zzz
>zzz
># ./busybox echo -n zzz
>zzz
># ./busybox env - echo -n zzz
>env: invalid option -- n
>
>       obviously, env tried to understand -n as env's option
>       instead of blindly passing it to echo...
>
>BusyBox v1.00-pre1 (2003.07.16-07:53+0000) multi-call binary
>
>Usage: env [-iu] [-] [name=value]... [command]

Ah, you found very old problem.
Last patch also have:

- multiple "-u unsetenv" support
- GNU long option support
- save errno after exec failed before bb_perror_msg()


--w
vodz
This commit is contained in:
Eric Andersen 2003-07-28 07:42:19 +00:00
parent 35e643b39f
commit 05df91a3ac
1 changed files with 41 additions and 12 deletions
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45
coreutils/env.c
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@ -33,32 +33,58 @@
* output error checking.
*/
/*
* Modified by Vladimir Oleynik <andersen@codepoet.org> (C) 2003
* - corretion "-" option usage
* - multiple "-u unsetenv" support
* - GNU long option support
* - save errno after exec failed before bb_perror_msg()
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <getopt.h>
#include "busybox.h"
static const struct option env_long_options[] = {
{ "ignore-environment", 0, NULL, 'i' },
{ "unset", 1, NULL, 'u' },
{ 0, 0, 0, 0 }
};
extern int env_main(int argc, char** argv)
{
char **ep, *p;
char *cleanenv[1] = { NULL };
unsigned long opt;
llist_t *unset_env;
extern char **environ;
opt = bb_getopt_ulflags(argc, argv, "iu:", &p);
if(opt & 1)
environ = cleanenv;
if(opt & 2)
unsetenv(p);
bb_opt_complementaly = "u*";
bb_applet_long_options = env_long_options;
opt = bb_getopt_ulflags(argc, argv, "+iu:", &unset_env);
argv += optind;
if (*argv && (argv[0][0] == '-') && !argv[0][1]) {
environ = cleanenv;
opt |= 1;
++argv;
}
if(opt & 1)
environ = cleanenv;
else if(opt & 2) {
while(unset_env) {
unsetenv(unset_env->data);
unset_env = unset_env->link;
}
}
while (*argv && ((p = strchr(*argv, '=')) != NULL)) {
if (putenv(*argv) < 0) {
bb_perror_msg_and_die("putenv");
@ -67,9 +93,12 @@ extern int env_main(int argc, char** argv)
}
if (*argv) {
int er;
execvp(*argv, argv);
er = errno;
bb_perror_msg("%s", *argv); /* Avoid multibyte problems. */
return (errno == ENOENT) ? 127 : 126; /* SUSv3-mandated exit codes. */
return (er == ENOENT) ? 127 : 126; /* SUSv3-mandated exit codes. */
}
for (ep = environ; *ep; ep++) {