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syserrlst(5) [bsd man page]

SYSERRLST(5)							File Formats Manual						      SYSERRLST(5)

NAME
syserrlst - error message file format DESCRIPTION
mkerrlst(1), creates error message files in the format described below. An ``error message file'' consists of a header, an array of structures specifying the offset and length of each message, and the array of message strings separated by newlines. The message strings are separated by newlines but the newline characters are not included in the size of the message. These newline char- acters serve only to make the file editable or printable (after stripping off the header). The file format is: /* * Definitions used by the 'mkerrlst' program which creates error message * files. * * The format of the file created is: * * struct ERRLSTHDR ehdr; * struct ERRLST emsg[num_of_messages]; * struct { * char msg[] = "error message string"; * char lf = '0; * } [num_of_messages]; * * Note: the newlines are NOT included in the message lengths, the newlines * are present to make it easy to 'cat' or 'vi' the file. */ struct ERRLSTHDR { short magic; short maxmsgnum; short maxmsglen; short pad[5]; /* Reserved */ }; struct ERRLST { off_t offmsg; short lenmsg; }; #define ERRMAGIC 012345 SEE ALSO
mkerrlst(1), syserrlst(3) BUGS
Format of the file isn't necessarily portable between machines. HISTORY
This file format is new with 2.11BSD. 3rd Berkeley Distribution March 7, 1996 SYSERRLST(5)

Check Out this Related Man Page

PERROR(3)						     Library Functions Manual							 PERROR(3)

NAME
perror, strerror - system error messages SYNOPSIS
perror(s) char *s; #include <string.h> char * strerror(errnum) int errnum; DESCRIPTION
The strerror() and perror() functions look up the error message string corresponding to an error number. The strerror() function accepts an error number argument errnum and returns a pointer to the corresponding message string. The perror() function finds the error message corresponding to the current value of the global variable errno (intro(2)) and writes it, followed by a newline, to the standard error file descriptor. If the argument string is non-NULL, it is prepended to the message string and separated from it by a colon and space (`: '). If string is NULL, only the error message string is printed. If errnum is not a recognized error number, the error message string will contain ``Unknown error: '' followed by the error number in deci- mal. The error messages are stored in a data file now rather than an in memory array. See syserror(5). SEE ALSO
mkerrlst(1), intro(2), psignal(3), strerror(3), syserror(3), syserror(5) BUGS
The strerror() function returns its result in a static buffer which may be overwritten by subsequent calls. The array sys_errlist[] and the global sys_nerr are obsolete and should not be used. They have, for the time being, been placed in an object library liberrlst.a. 4th Berkeley Distribution March 21, 1996 PERROR(3)
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