openenvutils/commandshell/shell/src/modules/cap.c
author Peter Fordham <peter.fordham@gmail.com>
Fri, 19 Mar 2010 13:11:12 -0700
branchCompilerCompatibility
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parent 0 2e3d3ce01487
child 4 0fdb7f6b0309
permissions -rw-r--r--
start CompilerCompatibility
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// cap.c - POSIX.1e (POSIX.6) capability set manipulation
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//
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// © Portions Copyright (c) Symbian Software Ltd 2007. All rights reserved.
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//
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/*
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 * This file is part of zsh, the Z shell.
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 *
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 * Copyright (c) 1997 Andrew Main
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 * All rights reserved.
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 *
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 * Permission is hereby granted, without written agreement and without
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 * license or royalty fees, to use, copy, modify, and distribute this
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 * software and to distribute modified versions of this software for any
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 * purpose, provided that the above copyright notice and the following
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 * two paragraphs appear in all copies of this software.
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 *
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 * In no event shall Andrew Main or the Zsh Development Group be liable
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 * to any party for direct, indirect, special, incidental, or consequential
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 * damages arising out of the use of this software and its documentation,
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 * even if Andrew Main and the Zsh Development Group have been advised of
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 * the possibility of such damage.
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 *
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 * Andrew Main and the Zsh Development Group specifically disclaim any
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 * warranties, including, but not limited to, the implied warranties of
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 * merchantability and fitness for a particular purpose.  The software
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 * provided hereunder is on an "as is" basis, and Andrew Main and the
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 * Zsh Development Group have no obligation to provide maintenance,
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 * support, updates, enhancements, or modifications.
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 *
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 */
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#include "cap.mdh"
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#include "cap.pro"
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#ifdef __SYMBIAN32__
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#ifdef __WINSCW__
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#pragma warn_unusedarg off
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#endif//__WINSCW__
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#endif//__SYMBIAN32__
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#ifdef HAVE_CAP_GET_PROC
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static int
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bin_cap(char *nam, char **argv, Options ops, int func)
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{
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    int ret = 0;
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    cap_t caps;
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    if(*argv) {
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	caps = cap_from_text(*argv);
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	if(!caps) {
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	    zwarnnam(nam, "invalid capability string", NULL, 0);
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	    return 1;
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	}
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	if(cap_set_proc(caps)) {
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	    zwarnnam(nam, "can't change capabilites: %e", NULL, errno);
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	    ret = 1;
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	}
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    } else {
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	char *result = NULL;
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	ssize_t length;
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	caps = cap_get_proc();
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	if(caps)
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	    result = cap_to_text(caps, &length);
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	if(!caps || !result) {
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	    zwarnnam(nam, "can't get capabilites: %e", NULL, errno);
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	    ret = 1;
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	} else
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	    puts(result);
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    }
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    cap_free(caps);
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    return ret;
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}
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static int
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bin_getcap(char *nam, char **argv, Options ops, int func)
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{
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    int ret = 0;
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    do {
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	char *result = NULL;
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	ssize_t length;
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	cap_t caps = cap_get_file(*argv);
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	if(caps)
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	    result = cap_to_text(caps, &length);
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	if (!caps || !result) {
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	    zwarnnam(nam, "%s: %e", *argv, errno);
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	    ret = 1;
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	} else
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	    printf("%s %s\n", *argv, result);
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	cap_free(caps);
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    } while(*++argv);
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    return ret;
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}
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static int
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bin_setcap(char *nam, char **argv, Options ops, int func)
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{
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    cap_t caps;
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    int ret = 0;
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    caps = cap_from_text(*argv++);
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    if(!caps) {
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	zwarnnam(nam, "invalid capability string", NULL, 0);
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	return 1;
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    }
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    do {
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	if(cap_set_file(*argv, caps)) {
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	    zwarnnam(nam, "%s: %e", *argv, errno);
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	    ret = 1;
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	}
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    } while(*++argv);
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    cap_free(caps);
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    return ret;
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}
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#else /* !HAVE_CAP_GET_PROC */
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# define bin_cap    bin_notavail
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# define bin_getcap bin_notavail
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# define bin_setcap bin_notavail
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#endif /* !HAVE_CAP_GET_PROC */
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/* module paraphernalia */
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static struct builtin bintab[] = {
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    BUILTIN("cap",    0, bin_cap,    0,  1, 0, NULL, NULL),
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    BUILTIN("getcap", 0, bin_getcap, 1, -1, 0, NULL, NULL),
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    BUILTIN("setcap", 0, bin_setcap, 2, -1, 0, NULL, NULL),
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};
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/**/
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int
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setup_(UNUSED(Module m))
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{
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    return 0;
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}
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/**/
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int
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boot_(Module m)
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{
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    return !addbuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
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}
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/**/
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int
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cleanup_(Module m)
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{
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    deletebuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
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    return 0;
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}
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/**/
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int
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finish_(UNUSED(Module m))
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{
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    return 0;
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}