X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Funistd.in.h;h=f191412e23ec3e0da1f49e090baf793d31ecc8be;hb=6c9f1e88ada406b65f6b10098b8c9e60c973e614;hp=cd3a60b7ce8333c632210dd0a399822e0948d256;hpb=d9576a558fefb2660292e7d4baccd23ea67ecf47;p=gnulib.git diff --git a/lib/unistd.in.h b/lib/unistd.in.h index cd3a60b7c..f191412e2 100644 --- a/lib/unistd.in.h +++ b/lib/unistd.in.h @@ -29,6 +29,9 @@ #ifndef _GL_UNISTD_H #define _GL_UNISTD_H +/* NetBSD 5.0 mis-defines NULL. Also get size_t. */ +#include + /* mingw doesn't define the SEEK_* or *_FILENO macros in . */ #if !(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET) # include @@ -43,6 +46,11 @@ # include #endif +/* Get getopt(), optarg, optind, opterr, optopt. */ +#if @GNULIB_UNISTD_H_GETOPT@ +# include +#endif + #if @GNULIB_GETHOSTNAME@ /* Get all possible declarations of gethostname(). */ # if @UNISTD_H_HAVE_WINSOCK2_H@ @@ -98,6 +106,15 @@ # define STDERR_FILENO 2 #endif +/* Ensure *_OK functions exist. */ +#ifndef F_OK +# define F_OK 0 +# define X_OK 1 +# define W_OK 2 +# define R_OK 4 +#endif + + /* Declare overridden functions. */ #ifdef __cplusplus @@ -130,6 +147,72 @@ extern int chown (const char *file, uid_t uid, gid_t gid); #endif +#if @GNULIB_FCHOWNAT@ +# if @REPLACE_FCHOWNAT@ +# undef fchownat +# define fchownat rpl_fchownat +# endif +# if !@HAVE_FCHOWNAT@ || @REPLACE_FCHOWNAT@ +extern int fchownat (int fd, char const *file, uid_t owner, gid_t group, int flag); +# endif +#elif defined GNULIB_POSIXCHECK +# undef fchownat +# define fchownat(d,n,o,g,f) \ + (GL_LINK_WARNING ("fchownat is not portable - " \ + "use gnulib module openat for portability"), \ + fchownat (d, n, o, g, f)) +#endif + + +#if @GNULIB_UNLINKAT@ +# if !@HAVE_UNLINKAT@ +extern int unlinkat (int fd, char const *file, int flag); +# endif +#elif defined GNULIB_POSIXCHECK +# undef unlinkat +# define unlinkat(d,n,f) \ + (GL_LINK_WARNING ("unlinkat is not portable - " \ + "use gnulib module openat for portability"), \ + unlinkat (d, n, f)) +#endif + + +#if @GNULIB_FACCESSAT@ +# if !@HAVE_FACCESSAT@ +int faccessat (int fd, char const *file, int mode, int flag); +# endif +#elif defined GNULIB_POSIXCHECK +# undef faccessat +# define faccessat(d,n,m,f) \ + (GL_LINK_WARNING ("faccessat is not portable - " \ + "use gnulib module faccessat for portability"), \ + faccessat (d, n, m, f)) +#endif + +#if @GNULIB_SYMLINKAT@ +# if !@HAVE_SYMLINKAT@ +int symlinkat (char const *contents, int fd, char const *file); +# endif +#elif defined GNULIB_POSIXCHECK +# undef symlinkat +# define symlinkat(c,d,n) \ + (GL_LINK_WARNING ("symlinkat is not portable - " \ + "use gnulib module symlinkat for portability"), \ + symlinkat (c, d, n)) +#endif + +#if @GNULIB_READLINKAT@ +# if !@HAVE_READLINKAT@ +ssize_t readlinkat (int fd, char const *file, char *buf, size_t len); +# endif +#elif defined GNULIB_POSIXCHECK +# undef readlinkat +# define readlinkat(d,n,b,l) \ + (GL_LINK_WARNING ("readlinkat is not portable - " \ + "use gnulib module symlinkat for portability"), \ + readlinkat (d, n, b, l)) +#endif + #if @GNULIB_CLOSE@ # if @REPLACE_CLOSE@ /* Automatically included by modules that need a replacement for close. */ @@ -137,7 +220,7 @@ extern int chown (const char *file, uid_t uid, gid_t gid); # define close rpl_close extern int close (int); # endif -#elif @UNISTD_H_HAVE_WINSOCK2_H@ +#elif @UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@ # undef close # define close close_used_without_requesting_gnulib_module_close #elif defined GNULIB_POSIXCHECK @@ -150,10 +233,13 @@ extern int close (int); #if @GNULIB_DUP2@ -# if !@HAVE_DUP2@ +# if @REPLACE_DUP2@ +# define dup2 rpl_dup2 +# endif +# if !@HAVE_DUP2@ || @REPLACE_DUP2@ /* Copy the file descriptor OLDFD into file descriptor NEWFD. Do nothing if NEWFD = OLDFD, otherwise close NEWFD first if it is open. - Return 0 if successful, otherwise -1 and errno set. + Return newfd if successful, otherwise -1 and errno set. See the POSIX:2001 specification . */ extern int dup2 (int oldfd, int newfd); @@ -167,6 +253,28 @@ extern int dup2 (int oldfd, int newfd); #endif +#if @GNULIB_DUP3@ +/* Copy the file descriptor OLDFD into file descriptor NEWFD, with the + specified flags. + The flags are a bitmask, possibly including O_CLOEXEC (defined in ) + and O_TEXT, O_BINARY (defined in "binary-io.h"). + Close NEWFD first if it is open. + Return newfd if successful, otherwise -1 and errno set. + See the Linux man page at + . */ +# if @HAVE_DUP3@ +# define dup3 rpl_dup3 +# endif +extern int dup3 (int oldfd, int newfd, int flags); +#elif defined GNULIB_POSIXCHECK +# undef dup3 +# define dup3(o,n,f) \ + (GL_LINK_WARNING ("dup3 is unportable - " \ + "use gnulib module dup3 for portability"), \ + dup3 (o, n, f)) +#endif + + #if @GNULIB_ENVIRON@ # if !@HAVE_DECL_ENVIRON@ /* Set of environment variables and values. An array of strings of the form @@ -214,8 +322,12 @@ extern int fchdir (int /*fd*/); # define dup rpl_dup extern int dup (int); -# define dup2 rpl_dup2 -extern int dup2 (int, int); + +/* Gnulib internal hooks needed to maintain the fchdir metadata. */ +extern int _gl_register_fd (int fd, const char *filename); +extern void _gl_unregister_fd (int fd); +extern int _gl_register_dup (int oldfd, int newfd); +extern const char *_gl_directory_name (int fd); # endif #elif defined GNULIB_POSIXCHECK @@ -313,7 +425,8 @@ extern int getdomainname(char *name, size_t len); #if @GNULIB_GETDTABLESIZE@ # if !@HAVE_GETDTABLESIZE@ -/* Return the maximum number of file descriptors in the current process. */ +/* Return the maximum number of file descriptors in the current process. + In POSIX, this is same as sysconf (_SC_OPEN_MAX). */ extern int getdtablesize (void); # endif #elif defined GNULIB_POSIXCHECK @@ -363,7 +476,6 @@ extern int gethostname(char *name, size_t len); See . */ # if !@HAVE_DECL_GETLOGIN_R@ -# include extern int getlogin_r (char *name, size_t size); # endif #elif defined GNULIB_POSIXCHECK @@ -483,11 +595,14 @@ extern int lchown (char const *file, uid_t owner, gid_t group); #if @GNULIB_LINK@ +# if @REPLACE_LINK@ +# define link rpl_link +# endif /* Create a new hard link for an existing file. Return 0 if successful, otherwise -1 and errno set. See POSIX:2001 specification . */ -# if !@HAVE_LINK@ +# if !@HAVE_LINK@ || @REPLACE_LINK@ extern int link (const char *path1, const char *path2); # endif #elif defined GNULIB_POSIXCHECK @@ -517,6 +632,28 @@ extern int link (const char *path1, const char *path2); #endif +#if @GNULIB_PIPE2@ +/* Create a pipe, applying the given flags when opening the read-end of the + pipe and the write-end of the pipe. + The flags are a bitmask, possibly including O_CLOEXEC (defined in ) + and O_TEXT, O_BINARY (defined in "binary-io.h"). + Store the read-end as fd[0] and the write-end as fd[1]. + Return 0 upon success, or -1 with errno set upon failure. + See also the Linux man page at + . */ +# if @HAVE_PIPE2@ +# define pipe2 rpl_pipe2 +# endif +extern int pipe2 (int fd[2], int flags); +#elif defined GNULIB_POSIXCHECK +# undef pipe2 +# define pipe2(f,o) \ + (GL_LINK_WARNING ("pipe2 is unportable - " \ + "use gnulib module pipe2 for portability"), \ + pipe2 (f, o)) +#endif + + #if @GNULIB_READLINK@ /* Read the contents of the symbolic link FILE and place the first BUFSIZE bytes of it into BUF. Return the number of bytes placed into BUF if @@ -524,7 +661,6 @@ extern int link (const char *path1, const char *path2); See the POSIX:2001 specification . */ # if !@HAVE_READLINK@ -# include extern int readlink (const char *file, char *buf, size_t bufsize); # endif #elif defined GNULIB_POSIXCHECK @@ -563,12 +699,6 @@ extern ssize_t write (int fd, const void *buf, size_t count); #endif -#ifdef FCHDIR_REPLACEMENT -/* gnulib internal function. */ -extern void _gl_unregister_fd (int fd); -#endif - - #ifdef __cplusplus } #endif