busybox/coreutils/whoami.c

/* vi: set sw=4 ts=4: */
/*
 * Mini whoami implementation for busybox
 *
 * Copyright (C) 2000  Edward Betts <edward@debian.org>.
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

/* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "busybox.h"

int whoami_main(int argc, char **argv);
int whoami_main(int argc, char **argv)
{
	if (argc > 1)
		bb_show_usage();

	puts(bb_getpwuid(NULL, geteuid(), -1));
	/* exits on error */
	fflush_stdout_and_exit(EXIT_SUCCESS);
}
Some formatting updates (ran the code through indent) -Erik 2000-02-09 03:58:47 +08:00			`/* vi: set sw=4 ts=4: */`
Sync up busybox with the latest and greatest. This is not stuff for the Embedix release. -Erik 2000-01-16 06:28:50 +08:00			`/*`
			`* Mini whoami implementation for busybox`
			`*`
			`* Copyright (C) 2000 Edward Betts <edward@debian.org>.`
			`*`
Add one-line GPL boilerplate to numerous (but not all yet) source files. 2006-07-12 15:56:04 +08:00			`* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.`
Sync up busybox with the latest and greatest. This is not stuff for the Embedix release. -Erik 2000-01-16 06:28:50 +08:00			`*/`

Major coreutils update. 2003-03-19 17:13:01 +08:00			`/* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */`
Patch from Jeff Garzik marking a few 'getopt not needed' apps. 2001-03-10 05:28:09 +08:00
Sync up busybox with the latest and greatest. This is not stuff for the Embedix release. -Erik 2000-01-16 06:28:50 +08:00			`#include <stdio.h>`
Fix header file usage -- there were many unnecessary header files included in busybox.h which slowed compiles. I left only what was needed and then fixed up all the apps to include their own header files. I also fixed naming for pwd.h and grp.h functions. Tested to compile and run with libc5, glibc, and uClibc. -Erik 2001-01-27 16:24:39 +08:00			`#include <stdlib.h>`
			`#include <unistd.h>`
It turns out that DODMALLOC was broken when I reorganized busybox.h header file usage before the 0.49 release. To fix it, I had to move the '#include "busybox.h"' to the end of the list of #include files. -Erik 2001-02-20 14:14:08 +08:00			`#include "busybox.h"`
Sync up busybox with the latest and greatest. This is not stuff for the Embedix release. -Erik 2000-01-16 06:28:50 +08:00
suppress warnings about easch <applet>_main() having no preceding prototype 2007-02-04 01:28:39 +08:00			`int whoami_main(int argc, char **argv);`
Robert P. Day removed 8 gazillion occurrences of "extern" on function definitions. (That should only be on prototypes.) 2006-03-07 04:47:33 +08:00			`int whoami_main(int argc, char **argv)`
Some formatting updates (ran the code through indent) -Erik 2000-02-09 03:58:47 +08:00			`{`
			`if (argc > 1)`
Major coreutils update. 2003-03-19 17:13:01 +08:00			`bb_show_usage();`
Sync up busybox with the latest and greatest. This is not stuff for the Embedix release. -Erik 2000-01-16 06:28:50 +08:00
- rename libbb's password helpers as suggested in libbb.h my_getpwnam -> bb_xgetpwnam /* dies on error / my_getgrnam -> bb_xgetgrnam / dies on error */ my_getgrgid -> bb_getgrgid my_getpwuid -> bb_getpwuid my_getug -> bb_getug 2005-09-21 05:06:17 +08:00			`puts(bb_getpwuid(NULL, geteuid(), -1));`
Tito writes: Hi Erik, Hi to all, This is part five of the my_getid story. I've tweaked a bit this two functions to make them more flexible, but this changes will not affect existing code. Now they work so: 1) my_getpwuid( char user, uid_t uid, int bufsize) if bufsize is > 0 char user cannot be set to NULL on success username is written on static allocated buffer on failure uid as string is written to buffer and NULL is returned if bufsize is = 0 char user can be set to NULL on success username is returned on failure NULL is returned if bufsize is < 0 char user can be set to NULL on success username is returned on failure an error message is printed and the program exits 2) 1) my_getgrgid( char group, uid_t uid, int bufsize) if bufsize is > 0 char group cannot be set to NULL on success groupname is written on static allocated buffer on failure gid as string is written to buffer and NULL is returned if bufsize is = 0 char group can be set to NULL on success groupname is returned on failure NULL is returned if bufsize is < 0 char *group can be set to nULL on success groupname is returned on failure an error message is printed and the program exits This changes were needed mainly for my new id applet. It is somewhat bigger then the previous but matches the behaviour of GNU id and is capable to handle usernames of whatever length. BTW: at a first look it seems to me that it will integrate well (with just a few changes) with the pending patch in patches/id_groups_alias.patch. The increase in size is balanced by the removal of my_getpwnamegid.c from libbb as this was used only in previous id applet and by size optimizations made possible in whoami.c and in passwd.c. I know that we are in feature freeze but I think that i've tested it enough (at least I hope so.......). 2004-09-03 06:21:41 +08:00			`/* exits on error */`
remove bb_printf and the like 2006-10-27 07:21:47 +08:00			`fflush_stdout_and_exit(EXIT_SUCCESS);`
Sync up busybox with the latest and greatest. This is not stuff for the Embedix release. -Erik 2000-01-16 06:28:50 +08:00			`}`