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BSD 2.11 - man page for syserrlst (bsd section 3)

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SYSERRLST(3)									     SYSERRLST(3)

       syserrlst, __errlst - read system error messages from file

       char *
       int err;

       char *
       __errlst(err, path);
       int err;
       char *path;

       Syserrlst(3) reads the error message string corresponding to err from the file /etc/syser-

       __errlst(3) reads the error message string corresponding to err from the file  path.   The
       file path must be in the format described in syserrlst(5).

       NULL  is  returned  if  err is out of bounds (negative or greater than the highest message
       number in /etc/syserrlst or path) or if the error message file can not be opened.   It  is
       the  responsibility  of the caller (strerror(3)) to check for and properly handle the NULL

       NULL if an error was encountered in opening the error message file, if the error  was  out
       of bounds, or if the file did not start with the correct magic number.  Otherwise a char *
       is returned pointing to a static buffer containing the text of the error message.

       syserrlst(3) and __errlst(3) can return any of the errors for the  open(2),  lseek(2),  or
       read(2) system calls.

       perror(3), strerror(3), syserrlst(5)

       syserrlst(3),  and __errlst(3) were created for 2.11BSD with the aim of saving 2kb of Data
       space in programs which called perror(3), or strerror(3).

       The information is stored in a static buffer.

3rd Berkeley Distribution		  March 26, 1996			     SYSERRLST(3)
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