2.5-18.1

[thirdparty/glibc.git] / sysdeps / posix / euidaccess.c

diff --git a/sysdeps/posix/euidaccess.c b/sysdeps/posix/euidaccess.c
index 8a2d826e95b1100d2abea3341485279c41dea00a..333870cdde7643ced145f127102104a0ece08e30 100644 (file)
--- 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
 \f
 #ifdef TEST
-#include <stdio.h>
-#include <errno.h>
-#include "error.h"
+# include <stdio.h>
+# include <errno.h>
+# include "error.h"
 
 char *program_name;