syslim/t_fpathconf.c

This is syslim/t_fpathconf.c (Listing 11-2, page 218), an example from the book, The Linux Programming Interface.

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Cover of The Linux Programming Interface

+/* t_fpathconf.c
+
+   Demonstrate the use of fpathconf() to retrieve the values of
+   pathname-related limits.
+*/
 #include "tlpi_hdr.h"
 
 static void             /* Print 'msg' plus value of fpathconf(fd, name) */
 fpathconfPrint(const char *msg, int fd, int name)
 {
     long lim;
 
     errno = 0;
     lim = fpathconf(fd, name);
     if (lim != -1) {        /* Call succeeded, limit determinate */
         printf("%s %ld\n", msg, lim);
     } else {
         if (errno == 0)     /* Call succeeded, limit indeterminate */
             printf("%s (indeterminate)\n", msg);
         else                /* Call failed */
             errExit("fpathconf %s", msg);
     }
 }
 
 int
 main(int argc, char *argv[])
 {
     fpathconfPrint("_PC_NAME_MAX: ", STDIN_FILENO, _PC_NAME_MAX);
     fpathconfPrint("_PC_PATH_MAX: ", STDIN_FILENO, _PC_PATH_MAX);
     fpathconfPrint("_PC_PIPE_BUF: ", STDIN_FILENO, _PC_PIPE_BUF);
     exit(EXIT_SUCCESS);
 }

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