diff options
Diffstat (limited to 'sysdeps/posix/euidaccess.c')
| -rw-r--r-- | sysdeps/posix/euidaccess.c | 96 |
1 files changed, 49 insertions, 47 deletions
diff --git a/sysdeps/posix/euidaccess.c b/sysdeps/posix/euidaccess.c index 8a2d826..333870c 100644 --- a/sysdeps/posix/euidaccess.c +++ b/sysdeps/posix/euidaccess.c @@ -1,5 +1,5 @@ /* Check if effective user id can access file - Copyright (C) 1990,91,95,96,97,98,99,2000,01 Free Software Foundation, Inc. + Copyright (C) 1990,1991,1995-2001,2005,2007 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -21,26 +21,26 @@ Adapted for GNU C library by Roland McGrath. */ #ifdef HAVE_CONFIG_H -#include <config.h> +# include <config.h> #endif #include <sys/types.h> #include <sys/stat.h> #ifdef S_IEXEC -#ifndef S_IXUSR -#define S_IXUSR S_IEXEC -#endif -#ifndef S_IXGRP -#define S_IXGRP (S_IEXEC >> 3) -#endif -#ifndef S_IXOTH -#define S_IXOTH (S_IEXEC >> 6) -#endif +# ifndef S_IXUSR +# define S_IXUSR S_IEXEC +# endif +# ifndef S_IXGRP +# define S_IXGRP (S_IEXEC >> 3) +# endif +# ifndef S_IXOTH +# define S_IXOTH (S_IEXEC >> 6) +# endif #endif /* S_IEXEC */ -#if defined (HAVE_UNISTD_H) || defined (_LIBC) -#include <unistd.h> +#if defined HAVE_UNISTD_H || defined _LIBC +# include <unistd.h> #endif #ifndef _POSIX_VERSION @@ -55,35 +55,35 @@ gid_t getegid (); extern int errno; #endif #ifndef __set_errno -#define __set_errno(val) errno = (val) +# define __set_errno(val) errno = (val) #endif -#if defined(EACCES) && !defined(EACCESS) -#define EACCESS EACCES +#if defined EACCES && !defined EACCESS +# define EACCESS EACCES #endif #ifndef F_OK -#define F_OK 0 -#define X_OK 1 -#define W_OK 2 -#define R_OK 4 +# define F_OK 0 +# define X_OK 1 +# define W_OK 2 +# define R_OK 4 #endif -#if !defined (S_IROTH) && defined (R_OK) +#if !defined S_IROTH && defined R_OK # define S_IROTH R_OK #endif -#if !defined (S_IWOTH) && defined (W_OK) +#if !defined S_IWOTH && defined W_OK # define S_IWOTH W_OK #endif -#if !defined (S_IXOTH) && defined (X_OK) +#if !defined S_IXOTH && defined X_OK # define S_IXOTH X_OK #endif #ifdef _LIBC -#define group_member __group_member -#define euidaccess __euidaccess +# define group_member __group_member +# define euidaccess __euidaccess #else @@ -93,14 +93,6 @@ static uid_t uid; /* The user's real group id. */ static gid_t gid; -#ifdef HAVE_GETGROUPS -int group_member (); -#else -#define group_member(gid) 0 -#endif - -#endif - /* The user's effective user id. */ static uid_t euid; @@ -110,6 +102,14 @@ static gid_t egid; /* Nonzero if UID, GID, EUID, and EGID have valid values. */ static int have_ids; +# ifdef HAVE_GETGROUPS +int group_member (); +# else +# define group_member(gid) 0 +# endif + +#endif + /* Return 0 if the user has permission of type MODE on file PATH; otherwise, return -1 and set `errno' to EACCESS. @@ -126,9 +126,8 @@ euidaccess (path, mode) int granted; #ifdef _LIBC - if (! __libc_enable_secure) - /* If we are not set-uid or set-gid, access does the same. */ - return __access (path, mode); + uid_t euid; + gid_t egid; #else if (have_ids == 0) { @@ -157,12 +156,12 @@ euidaccess (path, mode) #ifdef _LIBC /* Now we need the IDs. */ - if (have_ids == 0) - { - have_ids = 1; - euid = __geteuid (); - egid = __getegid (); - } + euid = __geteuid (); + egid = __getegid (); + + if (__getuid () == euid && __getgid () == egid) + /* If we are not set-uid or set-gid, access does the same. */ + return __access (path, mode); #endif /* The super-user can read and write any file, and execute any file @@ -172,25 +171,28 @@ euidaccess (path, mode) return 0; if (euid == stats.st_uid) - granted = (unsigned) (stats.st_mode & (mode << 6)) >> 6; + granted = (unsigned int) (stats.st_mode & (mode << 6)) >> 6; else if (egid == stats.st_gid || group_member (stats.st_gid)) - granted = (unsigned) (stats.st_mode & (mode << 3)) >> 3; + granted = (unsigned int) (stats.st_mode & (mode << 3)) >> 3; else granted = (stats.st_mode & mode); + /* XXX Add support for ACLs. */ if (granted == mode) return 0; __set_errno (EACCESS); return -1; } #undef euidaccess +#undef eaccess #ifdef weak_alias weak_alias (__euidaccess, euidaccess) +weak_alias (__euidaccess, eaccess) #endif #ifdef TEST -#include <stdio.h> -#include <errno.h> -#include "error.h" +# include <stdio.h> +# include <errno.h> +# include "error.h" char *program_name; |