163 lines
3.8 KiB
C
163 lines
3.8 KiB
C
/*
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* This header was copied from util-linux at fall 2011.
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*/
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/*
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* Fundamental C definitions.
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*/
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#ifndef PROCPS_NG_C_H
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#define PROCPS_NG_C_H
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#include <limits.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#ifdef HAVE_ERROR_H
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#include <error.h>
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#else
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#include <stdarg.h>
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#endif
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/*
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* Compiler specific stuff
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*/
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#ifndef __GNUC_PREREQ
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# if defined __GNUC__ && defined __GNUC_MINOR__
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# define __GNUC_PREREQ(maj, min) \
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((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
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# else
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# define __GNUC_PREREQ(maj, min) 0
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# endif
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#endif
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/*
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* Function attributes
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*/
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#ifndef __ul_alloc_size
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# if __GNUC_PREREQ (4, 3)
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# define __ul_alloc_size(s) __attribute__((alloc_size(s)))
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# else
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# define __ul_alloc_size(s)
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# endif
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#endif
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#ifndef __ul_calloc_size
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# if __GNUC_PREREQ (4, 3)
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# define __ul_calloc_size(n, s) __attribute__((alloc_size(n, s)))
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# else
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# define __ul_calloc_size(n, s)
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# endif
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#endif
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/*
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* Misc
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*/
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#ifndef PATH_MAX
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# define PATH_MAX 4096
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#endif
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#ifndef TRUE
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# define TRUE 1
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#endif
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#ifndef FALSE
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# define FALSE 0
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#endif
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/*
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* Program name.
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*/
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#ifndef HAVE_PROGRAM_INVOCATION_SHORT_NAME
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# ifdef HAVE___PROGNAME
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extern char *__progname;
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# define program_invocation_short_name __progname
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# else
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# ifdef HAVE_GETEXECNAME
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# define program_invocation_short_name \
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prog_inv_sh_nm_from_file(getexecname(), 0)
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# else
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# define program_invocation_short_name \
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prog_inv_sh_nm_from_file(__FILE__, 1)
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# endif
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static char prog_inv_sh_nm_buf[256];
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static inline char *prog_inv_sh_nm_from_file(char *f, char stripext)
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{
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char *t;
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if ((t = strrchr(f, '/')) != NULL)
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t++;
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else
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t = f;
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strncpy(prog_inv_sh_nm_buf, t, sizeof(prog_inv_sh_nm_buf) - 1);
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prog_inv_sh_nm_buf[sizeof(prog_inv_sh_nm_buf) - 1] = '\0';
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if (stripext && (t = strrchr(prog_inv_sh_nm_buf, '.')) != NULL)
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*t = '\0';
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return prog_inv_sh_nm_buf;
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}
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# endif
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#endif
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/*
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* Error printing.
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*/
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#ifndef HAVE_ERROR_H
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/* Emulate the error() function from glibc */
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__attribute__((__format__(__printf__, 3, 4)))
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static void error(int status, int errnum, const char *format, ...)
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{
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va_list argp;
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fprintf(stderr, "%s: ", program_invocation_short_name);
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va_start(argp, format);
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vfprintf(stderr, format, argp);
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va_end(argp);
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if (errnum != 0)
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fprintf(stderr, ": %s", strerror(errnum));
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fprintf(stderr, "\n");
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if (status != 0)
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exit(status);
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}
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/* Emulate the error_at_line() function from glibc */
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__attribute__((__format__(__printf__, 5, 6)))
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static void error_at_line(int status, int errnum, const char *filename,
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unsigned int linenum, const char *format, ...)
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{
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va_list argp;
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fprintf(stderr, "%s:%s:%u: ", program_invocation_short_name,
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filename, linenum);
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va_start(argp, format);
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vfprintf(stderr, format, argp);
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va_end(argp);
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if (errnum != 0)
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fprintf(stderr, ": error code %d", errnum);
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fprintf(stderr, "\n");
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if (status != 0)
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exit(status);
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}
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#endif
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#define xwarn(...) error(0, errno, __VA_ARGS__)
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#define xwarnx(...) error(0, 0, __VA_ARGS__)
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#define xerr(STATUS, ...) error(STATUS, errno, __VA_ARGS__)
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#define xerrx(STATUS, ...) error(STATUS, 0, __VA_ARGS__)
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/*
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* Constant strings for usage() functions.
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*/
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#define USAGE_HEADER _("\nUsage:\n")
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#define USAGE_OPTIONS _("\nOptions:\n")
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#define USAGE_SEPARATOR _("\n")
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#define USAGE_HELP _(" -h, --help display this help and exit\n")
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#define USAGE_VERSION _(" -V, --version output version information and exit\n")
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#define USAGE_MAN_TAIL(_man) _("\nFor more details see %s.\n"), _man
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#define PROCPS_NG_VERSION _("%s from %s\n"), program_invocation_short_name, PACKAGE_STRING
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#endif /* PROCPS_NG_C_H */
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