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#ifndef CCAN_ERR_H
#define CCAN_ERR_H
#include "config.h"
#if HAVE_ERR_H
#include <err.h>
/* This is unnecessary with a real err.h. See below */
#define err_set_progname(name) ((void)name)
#else
#include <ccan/compiler/compiler.h>
/**
* err_set_progname - set the program name
* @name: the name to use for err, errx, warn and warnx
*
* The BSD err.h calls know the program name, unfortunately there's no
* portable way for the CCAN replacements to do that on other systems.
*
* If you don't call this with argv[0], it will be "unknown program".
*
* Example:
* err_set_progname(argv[0]);
*/
void err_set_progname(const char *name);
/**
* err - exit(eval) with message based on format and errno.
* @eval: the exit code
* @fmt: the printf-style format string
*
* The format string is printed to stderr like so:
* <executable name>: <format>: <strerror(errno)>\n
*
* Example:
* char *p = strdup("hello");
* if (!p)
* err(1, "Failed to strdup 'hello'");
*/
void NORETURN err(int eval, const char *fmt, ...);
/**
* errx - exit(eval) with message based on format.
* @eval: the exit code
* @fmt: the printf-style format string
*
* The format string is printed to stderr like so:
* <executable name>: <format>\n
*
* Example:
* if (argc != 1)
* errx(1, "I don't expect any arguments");
*/
void NORETURN errx(int eval, const char *fmt, ...);
/**
* warn - print a message to stderr based on format and errno.
* @eval: the exit code
* @fmt: the printf-style format string
*
* The format string is printed to stderr like so:
* <executable name>: <format>: <strerror(errno)>\n
*
* Example:
* char *p = strdup("hello");
* if (!p)
* warn("Failed to strdup 'hello'");
*/
void warn(const char *fmt, ...);
/**
* warnx - print a message to stderr based on format.
* @eval: the exit code
* @fmt: the printf-style format string
*
* The format string is printed to stderr like so:
* <executable name>: <format>\n
*
* Example:
* if (argc != 1)
* warnx("I don't expect any arguments (ignoring)");
*/
void warnx(const char *fmt, ...);
#endif
#endif /* CCAN_ERR_H */
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