/usr/include/shhmsg.h is in libshhmsg1-dev 1.4.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | /* $Id: shhmsg.h,v 1.5 1997/05/27 21:11:06 sverrehu Exp $ */
#ifndef SHHMSG_H
#define SHHMSG_H
#include <stdio.h> /* FILE */
#ifdef __cplusplus
extern "C" {
#endif
#ifdef __GNUC__
#define MSG_NORET __attribute__ ((noreturn))
#define MSG_FORMAT_1 __attribute__ ((format (printf, 1, 2)))
#define MSG_FORMAT_2 __attribute__ ((format (printf, 2, 3)))
#else
#define MSG_NORET
#define MSG_FORMAT_1
#define MSG_FORMAT_2
#endif
/* program name functions */
void msgSetName(const char *s);
char *msgGetName(void);
/* error functions */
void msgError(const char *format, ...) MSG_FORMAT_1 ;
void msgFatal(const char *format, ...) MSG_FORMAT_1 MSG_NORET ;
void msgPerror(const char *format, ...) MSG_FORMAT_1 ;
void msgFatalPerror(const char *format, ...) MSG_FORMAT_1 ;
/* message output functions */
void msgMessage(const char *format, ...) MSG_FORMAT_1 ;
void msgVerbose(int level, const char *format, ...) MSG_FORMAT_2 ;
/* output control functions */
void msgSetQuiet(int onoff);
void msgSetVerbose(int level);
void msgSetShowNameAlways(int onoff);
FILE *msgSetErrorStream(FILE *f);
FILE *msgSetVerboseStream(FILE *f);
FILE *msgSetMessageStream(FILE *f);
/* constants */
#define MSG_VERBOSE_DEFAULT -1
#define MSG_VERBOSE_NONE 0
#define MSG_ON 1
#define MSG_OFF 0
#define MSG_QUIET 1
#define MSG_OUTPUT 0
/* variables that may be changed */
extern int msgVerboseLevel;
extern int msgBeQuiet;
#undef MSG_NORET
#undef MSG_FORMAT_1
#undef MSG_FORMAT_2
#ifdef __cplusplus
}
#endif
#endif
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