/* error.c -- error handler for noninteractive utilities Copyright (C) 1990-1992 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. */ /* David MacKenzie */ /* Brian Berliner added support for CVS */ #include "cvs.h" #include /* If non-zero, error will use the CVS protocol to stdout to report error messages. This will only be set in the CVS server parent process; most other code is run via do_cvs_command, which forks off a child process and packages up its stderr in the protocol. */ int error_use_protocol; #ifdef HAVE_VPRINTF #ifdef __STDC__ #include #define VA_START(args, lastarg) va_start(args, lastarg) #else /* ! __STDC__ */ #include #define VA_START(args, lastarg) va_start(args) #endif /* __STDC__ */ #else /* ! HAVE_VPRINTF */ #ifdef HAVE_DOPRNT #define va_alist args #define va_dcl int args; #else /* ! HAVE_DOPRNT */ #define va_alist a1, a2, a3, a4, a5, a6, a7, a8 #define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8; #endif /* HAVE_DOPRNT */ #endif /* HAVE_VPRINTF */ #if STDC_HEADERS #include #include #else /* ! STDC_HEADERS */ #ifdef __STDC__ void exit(int status); #else /* ! __STDC__ */ void exit (); #endif /* __STDC__ */ #endif /* STDC_HEADERS */ #ifndef strerror extern char *strerror (); #endif extern int vasprintf (); void error_exit PROTO ((void)) { Lock_Cleanup(); #ifdef SERVER_SUPPORT if (server_active) server_cleanup (0); #endif #ifdef SYSTEM_CLEANUP /* Hook for OS-specific behavior, for example socket subsystems on NT and OS2 or dealing with windows and arguments on Mac. */ SYSTEM_CLEANUP (); #endif exit (EXIT_FAILURE); } /* Print the program name and error message MESSAGE, which is a printf-style format string with optional args. If ERRNUM is nonzero, print its corresponding system error message. Exit with status EXIT_FAILURE if STATUS is nonzero. If MESSAGE is "", no need to print a message. I think this is largely cleaned up to the point where it does the right thing for the server, whether the normal server_active (child process) case or the error_use_protocol (parent process) case. The one exception is that STATUS nonzero for error_use_protocol probably doesn't work yet; in that case still need to use the pending_error machinery in server.c. */ /* VARARGS */ void #if defined (HAVE_VPRINTF) && defined (__STDC__) error (int status, int errnum, const char *message, ...) #else error (status, errnum, message, va_alist) int status; int errnum; const char *message; va_dcl #endif { #ifdef HAVE_VPRINTF if (message[0] != '\0') { va_list args; char *mess = NULL; char *entire; size_t len; VA_START (args, message); vasprintf (&mess, message, args); va_end (args); if (mess == NULL) { entire = NULL; status = 1; } else { len = strlen (mess) + strlen (program_name) + 80; if (command_name != NULL) len += strlen (command_name); if (errnum != 0) len += strlen (strerror (errnum)); entire = malloc (len); if (entire == NULL) { free (mess); status = 1; } else { strcpy (entire, program_name); if (command_name != NULL && command_name[0] != '\0') { strcat (entire, " "); if (status != 0) strcat (entire, "["); strcat (entire, command_name); if (status != 0) strcat (entire, " aborted]"); } strcat (entire, ": "); strcat (entire, mess); if (errnum != 0) { strcat (entire, ": "); strcat (entire, strerror (errnum)); } strcat (entire, "\n"); free (mess); } } cvs_outerr (entire ? entire : "out of memory\n", 0); if (entire != NULL) free (entire); } #else /* No HAVE_VPRINTF */ /* I think that all relevant systems have vprintf these days. But just in case, I'm leaving this code here. */ if (message[0] != '\0') { FILE *out = stderr; if (error_use_protocol) { out = stdout; printf ("E "); } if (command_name && *command_name) { if (status) fprintf (out, "%s [%s aborted]: ", program_name, command_name); else fprintf (out, "%s %s: ", program_name, command_name); } else fprintf (out, "%s: ", program_name); #ifdef HAVE_VPRINTF VA_START (args, message); vfprintf (out, message, args); va_end (args); #else #ifdef HAVE_DOPRNT _doprnt (message, &args, out); #else fprintf (out, message, a1, a2, a3, a4, a5, a6, a7, a8); #endif #endif if (errnum) fprintf (out, ": %s", strerror (errnum)); putc ('\n', out); /* In the error_use_protocol case, this probably does something useful. In most other cases, I suspect it is a noop (either stderr is line buffered or we haven't written anything to stderr) or unnecessary (if stderr is not line buffered, maybe there is a reason....). */ fflush (out); } #endif /* No HAVE_VPRINTF */ if (status) error_exit (); } /* Print the program name and error message MESSAGE, which is a printf-style format string with optional args to the file specified by FP. If ERRNUM is nonzero, print its corresponding system error message. Exit with status EXIT_FAILURE if STATUS is nonzero. */ /* VARARGS */ void #if defined (HAVE_VPRINTF) && defined (__STDC__) fperror (FILE *fp, int status, int errnum, char *message, ...) #else fperror (fp, status, errnum, message, va_alist) FILE *fp; int status; int errnum; char *message; va_dcl #endif { #ifdef HAVE_VPRINTF va_list args; #endif fprintf (fp, "%s: ", program_name); #ifdef HAVE_VPRINTF VA_START (args, message); vfprintf (fp, message, args); va_end (args); #else #ifdef HAVE_DOPRNT _doprnt (message, &args, fp); #else fprintf (fp, message, a1, a2, a3, a4, a5, a6, a7, a8); #endif #endif if (errnum) fprintf (fp, ": %s", strerror (errnum)); putc ('\n', fp); fflush (fp); if (status) error_exit (); }