87 lines
1.8 KiB
C
Executable File
87 lines
1.8 KiB
C
Executable File
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#ident "@(#)strsave.c 1.10 95/09/19 SMI" /* SVr4.0 1.1 */
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#include "uucp.h"
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#include <rpc/trace.h>
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/* #include <errno.h> */
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/* #include <malloc.h> */
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/* #include <string.h> */
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/* #include <sys/types.h> */
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/* #include <sys/stat.h> */
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#if defined(sparc)
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#define _STAT _stat
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#else /* !sparc */
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#define _STAT stat
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#endif /* sparc */
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/* copy str into data space -- caller should report errors. */
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GLOBAL char *
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strsave(str)
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#if defined(__STDC__)
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register const char *str;
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#else
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register char *str;
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#endif
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{
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register char *rval;
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trace1(TR_strsave, 0);
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rval = malloc(strlen(str) + 1);
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if (rval != 0)
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strcpy(rval, str);
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trace1(TR_strsave, 1);
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return (rval);
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}
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/* Determine if the effective user id has the appropriate permission
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on a file. Modeled after access(2).
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amode:
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00 just checks for file existence.
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04 checks read permission.
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02 checks write permission.
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01 checks execute/search permission.
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other bits are ignored quietly.
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*/
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GLOBAL int
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eaccess(path, amode)
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char *path;
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register mode_t amode;
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{
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struct stat s;
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uid_t euid;
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trace1(TR_eaccess, 0);
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if (_STAT(path, &s) == -1) {
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trace1(TR_eaccess, 1);
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return (-1); /* can't stat file */
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}
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amode &= 07;
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if ((euid = geteuid()) == 0) { /* root can do all */
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trace1(TR_eaccess, 1);
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return (0);
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}
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if (euid == s.st_uid)
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s.st_mode >>= 6; /* use owner bits */
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else if (getegid() == s.st_gid)
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s.st_mode >>= 3; /* use group bits */
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if ((amode & s.st_mode) == amode) {
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trace1(TR_eaccess, 1);
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return (0); /* access permitted */
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}
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errno = EACCES;
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trace1(TR_eaccess, 1);
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return (-1);
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}
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