Adding upstream version 2.33.1.upstream/2.33.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 410 insertions, 0 deletions

diff --git a/include/c.h b/include/c.h
new file mode 100644
index 0000000..17ec77c
--- /dev/null
+++ b/include/c.h
@@ -0,0 +1,410 @@
+/*
+ * 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 <assert.h>
+
+#ifdef HAVE_ERR_H
+# include <err.h>
+#endif
+
+#ifdef HAVE_SYS_SYSMACROS_H
+# include <sys/sysmacros.h>     /* for major, minor */
+#endif
+
+#ifndef LOGIN_NAME_MAX
+# define LOGIN_NAME_MAX 256
+#endif
+
+#ifndef NAME_MAX
+# define NAME_MAX PATH_MAX
+#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) __extension__ ({ \
+	__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), warn_unused_result))
+# 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), warn_unused_result))
+# 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 wherever else comma expressions
+ * aren't permitted).
+ */
+#define UL_BUILD_BUG_ON_ZERO(e) __extension__ (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) __extension__ ({		\
+	__typeof__(x) _min1 = (x);		\
+	__typeof__(y) _min2 = (y);		\
+	(void) (&_min1 == &_min2);		\
+	_min1 < _min2 ? _min1 : _min2; })
+#endif
+
+#ifndef max
+# define max(x, y) __extension__ ({		\
+	__typeof__(x) _max1 = (x);		\
+	__typeof__(y) _max2 = (y);		\
+	(void) (&_max1 == &_max2);		\
+	_max1 > _max2 ? _max1 : _max2; })
+#endif
+
+#ifndef cmp_numbers
+# define cmp_numbers(x, y) __extension__ ({	\
+	__typeof__(x) _a = (x);			\
+	__typeof__(y) _b = (y);			\
+	(void) (&_a == &_b);			\
+	_a == _b ? 0 : _a > _b ? 1 : -1; })
+#endif
+
+#ifndef offsetof
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#endif
+
+/*
+ * container_of - cast a member of a structure out to the containing structure
+ * @ptr:	the pointer to the member.
+ * @type:	the type of the container struct this is embedded in.
+ * @member:	the name of the member within the struct.
+ */
+#ifndef container_of
+#define container_of(ptr, type, member) __extension__ ({	\
+	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 */
+
+
+/* Don't use inline function to avoid '#include "nls.h"' in c.h
+ */
+#define errtryhelp(eval) __extension__ ({ \
+	fprintf(stderr, _("Try '%s --help' for more information.\n"), \
+			program_invocation_short_name); \
+	exit(eval); \
+})
+
+/* After failed execvp() */
+#define EX_EXEC_FAILED		126	/* Program located, but not usable. */
+#define EX_EXEC_ENOENT		127	/* Could not find program to exec.  */
+#define errexec(name)	err(errno == ENOENT ? EX_EXEC_ENOENT : EX_EXEC_FAILED, \
+			_("failed to execute %s"), name)
+
+
+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>
+
+#ifdef O_CLOEXEC
+#define UL_CLOEXECSTR	"e"
+#else
+#define UL_CLOEXECSTR	""
+#endif
+
+#ifndef O_CLOEXEC
+#define O_CLOEXEC 0
+#endif
+
+#ifdef __FreeBSD_kernel__
+#ifndef F_DUPFD_CLOEXEC
+#define F_DUPFD_CLOEXEC	17	/* Like F_DUPFD, but FD_CLOEXEC is set */
+#endif
+#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;
+}
+
+/*
+ * The usleep function was marked obsolete in POSIX.1-2001 and was removed
+ * in POSIX.1-2008.  It was replaced with nanosleep() that provides more
+ * advantages (like no interaction with signals and other timer functions).
+ */
+#include <time.h>
+
+static inline int xusleep(useconds_t usec)
+{
+#ifdef HAVE_NANOSLEEP
+	struct timespec waittime = {
+		.tv_sec   =  usec / 1000000L,
+		.tv_nsec  = (usec % 1000000L) * 1000
+	};
+	return nanosleep(&waittime, NULL);
+#elif defined(HAVE_USLEEP)
+	return usleep(usec);
+#else
+# error	"System with usleep() or nanosleep() required!"
+#endif
+}
+
+/*
+ * Constant strings for usage() functions. For more info see
+ * Documentation/{howto-usage-function.txt,boilerplate.c}
+ */
+#define USAGE_HEADER     _("\nUsage:\n")
+#define USAGE_OPTIONS    _("\nOptions:\n")
+#define USAGE_FUNCTIONS  _("\nFunctions:\n")
+#define USAGE_COMMANDS   _("\nCommands:\n")
+#define USAGE_COLUMNS    _("\nAvailable output columns:\n")
+#define USAGE_SEPARATOR    "\n"
+
+#define USAGE_OPTSTR_HELP     _("display this help")
+#define USAGE_OPTSTR_VERSION  _("display version")
+
+#define USAGE_HELP_OPTIONS(marg_dsc) \
+		"%-" #marg_dsc "s%s\n" \
+		"%-" #marg_dsc "s%s\n" \
+		, " -h, --help",    USAGE_OPTSTR_HELP \
+		, " -V, --version", USAGE_OPTSTR_VERSION
+
+#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
+
+
+/*
+ * Macros to convert #define'itions to strings, for example
+ * #define XYXXY 42
+ * printf ("%s=%s\n", stringify(XYXXY), stringify_value(XYXXY));
+ */
+#define stringify_value(s) stringify(s)
+#define stringify(s) #s
+
+/*
+ * UL_ASAN_BLACKLIST is a macro to tell AddressSanitizer (a compile-time
+ * instrumentation shipped with Clang and GCC) to not instrument the
+ * annotated function.  Furthermore, it will prevent the compiler from
+ * inlining the function because inlining currently breaks the blacklisting
+ * mechanism of AddressSanitizer.
+ */
+#if defined(__has_feature)
+# if __has_feature(address_sanitizer)
+#  define UL_ASAN_BLACKLIST __attribute__((noinline)) __attribute__((no_sanitize_memory)) __attribute__((no_sanitize_address))
+# else
+#  define UL_ASAN_BLACKLIST	/* nothing */
+# endif
+#else
+# define UL_ASAN_BLACKLIST	/* nothing */
+#endif
+
+
+
+/*
+ * Note that sysconf(_SC_GETPW_R_SIZE_MAX) returns *initial* suggested size for
+ * pwd buffer and in some cases it is not large enough. See POSIX and
+ * getpwnam_r man page for more details.
+ */
+#define UL_GETPW_BUFSIZ	(16 * 1024)
+
+/*
+ * Darwin or other BSDs may only have MAP_ANON. To get it on Darwin we must
+ * define _DARWIN_C_SOURCE before including sys/mman.h. We do this in config.h.
+ */
+#if !defined MAP_ANONYMOUS && defined MAP_ANON
+# define MAP_ANONYMOUS  (MAP_ANON)
+#endif
+
+#endif /* UTIL_LINUX_C_H */