mirror of
https://github.com/zsh-users/zsh
synced 2024-07-21 18:24:18 +00:00
153 lines
3.4 KiB
C
153 lines
3.4 KiB
C
/*
|
|
* cap.c - POSIX.1e (POSIX.6) capability set manipulation
|
|
*
|
|
* This file is part of zsh, the Z shell.
|
|
*
|
|
* Copyright (c) 1997 Andrew Main
|
|
* All rights reserved.
|
|
*
|
|
* Permission is hereby granted, without written agreement and without
|
|
* license or royalty fees, to use, copy, modify, and distribute this
|
|
* software and to distribute modified versions of this software for any
|
|
* purpose, provided that the above copyright notice and the following
|
|
* two paragraphs appear in all copies of this software.
|
|
*
|
|
* In no event shall Andrew Main or the Zsh Development Group be liable
|
|
* to any party for direct, indirect, special, incidental, or consequential
|
|
* damages arising out of the use of this software and its documentation,
|
|
* even if Andrew Main and the Zsh Development Group have been advised of
|
|
* the possibility of such damage.
|
|
*
|
|
* Andrew Main and the Zsh Development Group specifically disclaim any
|
|
* warranties, including, but not limited to, the implied warranties of
|
|
* merchantability and fitness for a particular purpose. The software
|
|
* provided hereunder is on an "as is" basis, and Andrew Main and the
|
|
* Zsh Development Group have no obligation to provide maintenance,
|
|
* support, updates, enhancements, or modifications.
|
|
*
|
|
*/
|
|
|
|
#include "cap.mdh"
|
|
#include "cap.pro"
|
|
|
|
#ifdef HAVE_CAP_GET_PROC
|
|
|
|
static int
|
|
bin_cap(char *nam, char **argv, Options ops, int func)
|
|
{
|
|
int ret = 0;
|
|
cap_t caps;
|
|
if(*argv) {
|
|
caps = cap_from_text(*argv);
|
|
if(!caps) {
|
|
zwarnnam(nam, "invalid capability string", NULL, 0);
|
|
return 1;
|
|
}
|
|
if(cap_set_proc(caps)) {
|
|
zwarnnam(nam, "can't change capabilites: %e", NULL, errno);
|
|
ret = 1;
|
|
}
|
|
} else {
|
|
char *result = NULL;
|
|
ssize_t length;
|
|
caps = cap_get_proc();
|
|
if(caps)
|
|
result = cap_to_text(caps, &length);
|
|
if(!caps || !result) {
|
|
zwarnnam(nam, "can't get capabilites: %e", NULL, errno);
|
|
ret = 1;
|
|
} else
|
|
puts(result);
|
|
}
|
|
cap_free(caps);
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
bin_getcap(char *nam, char **argv, Options ops, int func)
|
|
{
|
|
int ret = 0;
|
|
|
|
do {
|
|
char *result = NULL;
|
|
ssize_t length;
|
|
cap_t caps = cap_get_file(*argv);
|
|
if(caps)
|
|
result = cap_to_text(caps, &length);
|
|
if (!caps || !result) {
|
|
zwarnnam(nam, "%s: %e", *argv, errno);
|
|
ret = 1;
|
|
} else
|
|
printf("%s %s\n", *argv, result);
|
|
cap_free(caps);
|
|
} while(*++argv);
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
bin_setcap(char *nam, char **argv, Options ops, int func)
|
|
{
|
|
cap_t caps;
|
|
int ret = 0;
|
|
|
|
caps = cap_from_text(*argv++);
|
|
if(!caps) {
|
|
zwarnnam(nam, "invalid capability string", NULL, 0);
|
|
return 1;
|
|
}
|
|
|
|
do {
|
|
if(cap_set_file(*argv, caps)) {
|
|
zwarnnam(nam, "%s: %e", *argv, errno);
|
|
ret = 1;
|
|
}
|
|
} while(*++argv);
|
|
cap_free(caps);
|
|
return ret;
|
|
}
|
|
|
|
#else /* !HAVE_CAP_GET_PROC */
|
|
|
|
# define bin_cap bin_notavail
|
|
# define bin_getcap bin_notavail
|
|
# define bin_setcap bin_notavail
|
|
|
|
#endif /* !HAVE_CAP_GET_PROC */
|
|
|
|
/* module paraphernalia */
|
|
|
|
static struct builtin bintab[] = {
|
|
BUILTIN("cap", 0, bin_cap, 0, 1, 0, NULL, NULL),
|
|
BUILTIN("getcap", 0, bin_getcap, 1, -1, 0, NULL, NULL),
|
|
BUILTIN("setcap", 0, bin_setcap, 2, -1, 0, NULL, NULL),
|
|
};
|
|
|
|
/**/
|
|
int
|
|
setup_(Module m)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/**/
|
|
int
|
|
boot_(Module m)
|
|
{
|
|
return !addbuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
|
|
}
|
|
|
|
/**/
|
|
int
|
|
cleanup_(Module m)
|
|
{
|
|
deletebuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
|
|
return 0;
|
|
}
|
|
|
|
/**/
|
|
int
|
|
finish_(Module m)
|
|
{
|
|
return 0;
|
|
}
|