diff options
Diffstat (limited to 'libblkid/c.h')
| -rw-r--r-- | libblkid/c.h | 280 |
1 files changed, 0 insertions, 280 deletions
diff --git a/libblkid/c.h b/libblkid/c.h deleted file mode 100644 index 037a09928..000000000 --- a/libblkid/c.h +++ /dev/null @@ -1,280 +0,0 @@ -/* - * Fundamental C definitions. - */ - -#ifndef UTIL_LINUX_C_H -#define UTIL_LINUX_C_H - -#include <limits.h> -#include <stddef.h> -#include <stdint.h> -#include <stdio.h> -#include <unistd.h> -#include <stdarg.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> -#include "blkid.h" -#ifdef HAVE_ERR_H -# include <err.h> -#endif - -#ifndef HAVE_USLEEP -# include <time.h> -#endif - -/* - * Compiler specific stuff - */ -#ifndef __GNUC_PREREQ -# if defined __GNUC__ && defined __GNUC_MINOR__ -# define __GNUC_PREREQ(maj, min) \ - ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) -# else -# define __GNUC_PREREQ(maj, min) 0 -# endif -#endif - -#ifdef __GNUC__ - -/* &a[0] degrades to a pointer: a different type from an array */ -# define __must_be_array(a) \ - UL_BUILD_BUG_ON_ZERO(__builtin_types_compatible_p(__typeof__(a), __typeof__(&a[0]))) - -# define ignore_result(x) ({ \ - __typeof__(x) __dummy __attribute__((__unused__)) = (x); (void) __dummy; \ -}) - -#else /* !__GNUC__ */ -# define __must_be_array(a) 0 -# define __attribute__(_arg_) -# define ignore_result(x) ((void) (x)) -#endif /* !__GNUC__ */ - -/* - * Function attributes - */ -#ifndef __ul_alloc_size -# if __GNUC_PREREQ (4, 3) -# define __ul_alloc_size(s) __attribute__((alloc_size(s))) -# else -# define __ul_alloc_size(s) -# endif -#endif - -#ifndef __ul_calloc_size -# if __GNUC_PREREQ (4, 3) -# define __ul_calloc_size(n, s) __attribute__((alloc_size(n, s))) -# else -# define __ul_calloc_size(n, s) -# endif -#endif - -/* Force a compilation error if condition is true, but also produce a - * result (of value 0 and type size_t), so the expression can be used - * e.g. in a structure initializer (or where-ever else comma expressions - * aren't permitted). - */ -#define UL_BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); })) -#define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); })) - -#ifndef ARRAY_SIZE -# define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr)) -#endif - -#ifndef PATH_MAX -# define PATH_MAX 4096 -#endif - -#ifndef TRUE -# define TRUE 1 -#endif - -#ifndef FALSE -# define FALSE 0 -#endif - -#ifndef min -# define min(x, y) ({ \ - __typeof__(x) _min1 = (x); \ - __typeof__(y) _min2 = (y); \ - (void) (&_min1 == &_min2); \ - _min1 < _min2 ? _min1 : _min2; }) -#endif - -#ifndef max -# define max(x, y) ({ \ - __typeof__(x) _max1 = (x); \ - __typeof__(y) _max2 = (y); \ - (void) (&_max1 == &_max2); \ - _max1 > _max2 ? _max1 : _max2; }) -#endif - -#ifndef offsetof -#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) -#endif - -#ifndef container_of -#define container_of(ptr, type, member) ({ \ - const __typeof__( ((type *)0)->member ) *__mptr = (ptr); \ - (type *)( (char *)__mptr - offsetof(type,member) );}) -#endif - -#ifndef HAVE_PROGRAM_INVOCATION_SHORT_NAME -# ifdef HAVE___PROGNAME -extern char *__progname; -# define program_invocation_short_name __progname -# else -# ifdef HAVE_GETEXECNAME -# define program_invocation_short_name \ - prog_inv_sh_nm_from_file(getexecname(), 0) -# else -# define program_invocation_short_name \ - prog_inv_sh_nm_from_file(__FILE__, 1) -# endif -static char prog_inv_sh_nm_buf[256]; -static inline char * -prog_inv_sh_nm_from_file(char *f, char stripext) -{ - char *t; - - if ((t = strrchr(f, '/')) != NULL) - t++; - else - t = f; - - strncpy(prog_inv_sh_nm_buf, t, sizeof(prog_inv_sh_nm_buf) - 1); - prog_inv_sh_nm_buf[sizeof(prog_inv_sh_nm_buf) - 1] = '\0'; - - if (stripext && (t = strrchr(prog_inv_sh_nm_buf, '.')) != NULL) - *t = '\0'; - - return prog_inv_sh_nm_buf; -} -# endif -#endif - - -#ifndef HAVE_ERR_H -static inline void -errmsg(char doexit, int excode, char adderr, const char *fmt, ...) -{ - fprintf(stderr, "%s: ", program_invocation_short_name); - if (fmt != NULL) { - va_list argp; - va_start(argp, fmt); - vfprintf(stderr, fmt, argp); - va_end(argp); - if (adderr) - fprintf(stderr, ": "); - } - if (adderr) - fprintf(stderr, "%m"); - fprintf(stderr, "\n"); - if (doexit) - exit(excode); -} - -#ifndef HAVE_ERR -# define err(E, FMT...) errmsg(1, E, 1, FMT) -#endif - -#ifndef HAVE_ERRX -# define errx(E, FMT...) errmsg(1, E, 0, FMT) -#endif - -#ifndef HAVE_WARN -# define warn(FMT...) errmsg(0, 0, 1, FMT) -#endif - -#ifndef HAVE_WARNX -# define warnx(FMT...) errmsg(0, 0, 0, FMT) -#endif -#endif /* !HAVE_ERR_H */ - - -static inline __attribute__((const)) int is_power_of_2(unsigned long num) -{ - return (num != 0 && ((num & (num - 1)) == 0)); -} - -#ifndef HAVE_LOFF_T -typedef int64_t loff_t; -#endif - -#if !defined(HAVE_DIRFD) && (!defined(HAVE_DECL_DIRFD) || HAVE_DECL_DIRFD == 0) && defined(HAVE_DIR_DD_FD) -#include <sys/types.h> -#include <dirent.h> -static inline int dirfd(DIR *d) -{ - return d->dd_fd; -} -#endif - -/* - * Fallback defines for old versions of glibc - */ -#include <fcntl.h> -#ifndef O_CLOEXEC -#define O_CLOEXEC 0 -#endif - -#ifndef AI_ADDRCONFIG -#define AI_ADDRCONFIG 0x0020 -#endif - -#ifndef IUTF8 -#define IUTF8 0040000 -#endif - -/* - * MAXHOSTNAMELEN replacement - */ -static inline size_t get_hostname_max(void) -{ - long len = sysconf(_SC_HOST_NAME_MAX); - - if (0 < len) - return len; - -#ifdef MAXHOSTNAMELEN - return MAXHOSTNAMELEN; -#elif HOST_NAME_MAX - return HOST_NAME_MAX; -#endif - return 64; -} - -/* - * Constant strings for usage() functions. For more info see - * Documentation/howto-usage-function.txt and sys-utils/arch.c - */ -#define USAGE_HEADER _("\nUsage:\n") -#define USAGE_OPTIONS _("\nOptions:\n") -#define USAGE_SEPARATOR _("\n") -#define USAGE_HELP _(" -h, --help display this help and exit\n") -#define USAGE_VERSION _(" -V, --version output version information and exit\n") -#define USAGE_MAN_TAIL(_man) _("\nFor more details see %s.\n"), _man - -#define UTIL_LINUX_VERSION _("%s from %s\n"), program_invocation_short_name, PACKAGE_STRING - -/* - * scanf modifiers for "strings allocation" - */ -#ifdef HAVE_SCANF_MS_MODIFIER -#define UL_SCNsA "%ms" -#elif defined(HAVE_SCANF_AS_MODIFIER) -#define UL_SCNsA "%as" -#endif - -/* - * seek stuff - */ -#ifndef SEEK_DATA -# define SEEK_DATA 3 -#endif -#ifndef SEEK_HOLE -# define SEEK_HOLE 4 -#endif - -#endif /* UTIL_LINUX_C_H */ |