X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fopenat.h;h=11a0314d2426d820ae0c39bfe9e58e8f7eeb6b7d;hb=548521fdc6765481e09537489cb9eec5f6ac1cd5;hp=b5e4f116c92809d85560aed7cbd0c909c801dfc9;hpb=57fdfd3f8ec62b105c53bcdf6f127c35c7fe7391;p=gnulib.git diff --git a/lib/openat.h b/lib/openat.h index b5e4f116c..11a0314d2 100644 --- a/lib/openat.h +++ b/lib/openat.h @@ -1,5 +1,5 @@ /* provide a replacement openat function - Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc. + Copyright (C) 2004-2006, 2008-2010 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -16,6 +16,9 @@ /* written by Jim Meyering */ +#ifndef _GL_HEADER_OPENAT +#define _GL_HEADER_OPENAT + #include #include @@ -25,7 +28,7 @@ #include #ifndef __attribute__ -# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__ +# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) # define __attribute__(x) /* empty */ # endif #endif @@ -34,46 +37,10 @@ # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__)) #endif -/* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive. Its - value exceeds INT_MAX, so its use as an int doesn't conform to the - C standard, and GCC and Sun C complain in some cases. If the bug - is present, undef AT_FDCWD here, so it can be redefined below. */ -#if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553 -# undef AT_FDCWD -#endif - -/* Use the same bit pattern as Solaris 9, but with the proper - signedness. The bit pattern is important, in case this actually is - Solaris with the above workaround. */ -#ifndef AT_FDCWD -# define AT_FDCWD (-3041965) -#endif - -/* Use the same values as Solaris 9. This shouldn't matter, but - there's no real reason to differ. */ -#ifndef AT_SYMLINK_NOFOLLOW -# define AT_SYMLINK_NOFOLLOW 4096 -# define AT_REMOVEDIR 1 -#endif - -#ifdef __OPENAT_PREFIX +#if !HAVE_OPENAT -# undef openat -# define __OPENAT_CONCAT(x, y) x ## y -# define __OPENAT_XCONCAT(x, y) __OPENAT_CONCAT (x, y) -# define __OPENAT_ID(y) __OPENAT_XCONCAT (__OPENAT_PREFIX, y) -# define openat __OPENAT_ID (openat) -int openat (int fd, char const *file, int flags, /* mode_t mode */ ...); int openat_permissive (int fd, char const *file, int flags, mode_t mode, - int *cwd_errno); -# if ! HAVE_FDOPENDIR -# define fdopendir __OPENAT_ID (fdopendir) -# endif -DIR *fdopendir (int fd); -# define fstatat __OPENAT_ID (fstatat) -int fstatat (int fd, char const *file, struct stat *st, int flag); -# define unlinkat __OPENAT_ID (unlinkat) -int unlinkat (int fd, char const *file, int flag); + int *cwd_errno); bool openat_needs_fchdir (void); #else @@ -84,19 +51,8 @@ bool openat_needs_fchdir (void); #endif -#if HAVE_OPENAT && ! LSTAT_FOLLOWS_SLASHED_SYMLINK -int rpl_fstatat (int fd, char const *file, struct stat *st, int flag); -# if !COMPILING_FSTATAT -# undef fstatat -# define fstatat rpl_fstatat -# endif -#endif - -int mkdirat (int fd, char const *file, mode_t mode); void openat_restore_fail (int) ATTRIBUTE_NORETURN; void openat_save_fail (int) ATTRIBUTE_NORETURN; -int fchmodat (int fd, char const *file, mode_t mode, int flag); -int fchownat (int fd, char const *file, uid_t owner, gid_t group, int flag); /* Using these function names makes application code slightly more readable than it would be with @@ -124,3 +80,35 @@ lchmodat (int fd, char const *file, mode_t mode) { return fchmodat (fd, file, mode, AT_SYMLINK_NOFOLLOW); } + +static inline int +statat (int fd, char const *name, struct stat *st) +{ + return fstatat (fd, name, st, 0); +} + +static inline int +lstatat (int fd, char const *name, struct stat *st) +{ + return fstatat (fd, name, st, AT_SYMLINK_NOFOLLOW); +} + +#if GNULIB_FACCESSAT +/* For now, there are no wrappers named laccessat or leuidaccessat, + since gnulib doesn't support faccessat(,AT_SYMLINK_NOFOLLOW) and + since access rights on symlinks are of limited utility. */ + +static inline int +accessat (int fd, char const *file, int mode) +{ + return faccessat (fd, file, mode, 0); +} + +static inline int +euidaccessat (int fd, char const *file, int mode) +{ + return faccessat (fd, file, mode, AT_EACCESS); +} +#endif + +#endif /* _GL_HEADER_OPENAT */