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/* $Source: /u/mark/src/pax/RCS/warn.c,v $
* * $Revision: 1.2 $ * * warn.c - miscellaneous user warning routines * * DESCRIPTION * * These routines provide the user with various forms of warning * and informational messages. * * AUTHOR * * Mark H. Colburn, NAPS International (mark@jhereg.mn.org) * * Sponsored by The USENIX Association for public distribution. * * Copyright (c) 1989 Mark H. Colburn. * All rights reserved. * * Redistribution and use in source and binary forms are permitted * provided that the above copyright notice is duplicated in all such * forms and that any documentation, advertising materials, and other * materials related to such distribution and use acknowledge that the * software was developed * by Mark H. Colburn and sponsored by The * USENIX Association. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. * * $Log: warn.c,v $ * Revision 1.2 89/02/12 10:06:15 mark * 1.2 release fixes * * Revision 1.1 88/12/23 18:02:40 mark * Initial revision * */
#ifndef lint
static char *ident = "$Id: warn.c,v 1.2 89/02/12 10:06:15 mark Exp $";static char *copyright = "Copyright (c) 1989 Mark H. Colburn.\nAll rights reserved.\n";#endif /* ! lint */
/* Headers */
#include "pax.h"
/* Function Prototypes */
#ifdef __STDC__
static void prsize(FILE *, OFFSET);
#else /* !__STDC__ */
static void prsize();
#endif /* __STDC__ */
/* warnarch - print an archive-related warning message and offset
* * DESCRIPTION * * Present the user with an error message and an archive offset at * which the error occured. This can be useful for diagnosing or * fixing damaged archives. * * PARAMETERS * * char *msg - A message string to be printed for the user. * OFFSET adjust - An adjustment which is added to the current * archive position to tell the user exactly where * the error occurred. */
#ifdef __STDC__
void warnarch(char *msg, OFFSET adjust)
#else
void warnarch(msg, adjust)char *msg;OFFSET adjust;
#endif
{#ifdef DF_TRACE_DEBUG
printf("DF_TRACE_DEBUG: void warnarch() in warn.c\n");#endif
fprintf(stderr, "%s: [offset ", myname); prsize(stderr, total - adjust); fprintf(stderr, "]: %s\n", msg);}
#ifdef STRERROR /* Xn */
/* strerror - return pointer to appropriate system error message
* * DESCRIPTION * * Get an error message string which is appropriate for the setting * of the errno variable. * * RETURNS * * Returns a pointer to a string which has an appropriate error * message for the present value of errno. The error message * strings are taken from sys_errlist[] where appropriate. If an * appropriate message is not available in sys_errlist, then a * pointer to the string "Unknown error (errno <errvalue>)" is * returned instead. */
#ifdef __STDC__
char *strerror(int errno) /* Xn */
#else
char *strerror(errno) /* Xn */int errno; /* Xn */
#endif
{ static char msg[40]; /* used for "Unknown error" messages */
#ifndef DF_POSIX //DF_MSS
#ifdef DF_TRACE_DEBUG
printf("DF_TRACE_DEBUG: char *strerror() in warn.c\n");#endif
if (errno > 0 && errno < sys_nerr) { return (sys_errlist[errno]); }#endif
sprintf(msg, "Unknown error (errno %d)", errno); return (msg);}#endif /* Xn */
/* prsize - print a file offset on a file stream
* * DESCRIPTION * * Prints a file offset to a specific file stream. The file offset is * of the form "%dm+%dk+%d", where the number preceeding the "m" and * the "k" stand for the number of Megabytes and the number of * Kilobytes, respectivley, which have been processed so far. * * PARAMETERS * * FILE *stream - Stream which is to be used for output * OFFSET size - Current archive position to be printed on the output * stream in the form: "%dm+%dk+%d". * */
#ifdef __STDC__
static void prsize(FILE *stream, OFFSET size)
#else
static void prsize(stream, size)FILE *stream; /* stream which is used for output */OFFSET size; /* current archive position to be printed */
#endif
{ OFFSET n;
#ifdef DF_TRACE_DEBUG
printf("DF_TRACE_DEBUG: static void prsize() in warn.c\n");#endif
if (n = (size / (1024L * 1024L))) { fprintf(stream, "%ldm+", n); size -= n * 1024L * 1024L; } if (n = (size / 1024L)) { fprintf(stream, "%ldk+", n); size -= n * 1024L; } fprintf(stream, "%ld", size);}
/* fatal - print fatal message and exit
* * DESCRIPTION * * Fatal prints the program's name along with an error message, then * exits the program with a non-zero return code. * * PARAMETERS * * char *why - description of reason for termination * * RETURNS * * Returns an exit code of 1 to the parent process. */
#ifdef __STDC__
void fatal(char *why)
#else
void fatal(why)char *why; /* description of reason for termination */
#endif
{#ifdef DF_TRACE_DEBUG
printf("DF_TRACE_DEBUG: void fatal() in warn.c\n");#endif
#ifdef _POSIX_SOURCE
perror(why);#endif
fprintf(stderr, "%s: %s\n", myname, why); exit(1);}
/* warn - print a warning message
* * DESCRIPTION * * Print an error message listing the program name, the actual error * which occurred and an informational message as to why the error * occurred on the standard error device. The standard error is * flushed after the error is printed to assure that the user gets * the message in a timely fasion. * * PARAMETERS * * char *what - Pointer to string describing what failed. * char *why - Pointer to string describing why did it failed. */
#ifdef __STDC__
void warn(char *what, char *why)
#else
void warn(what, why)char *what; /* message as to what the error was */char *why; /* explanation why the error occurred */
#endif
{#ifdef DF_TRACE_DEBUG
printf("DF_TRACE_DEBUG: void warn() in warn.c\n");#endif
fprintf(stderr, "%s: %s : %s\n", myname, what, why); fflush(stderr);}
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