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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Function list (Bold in this list means a function is not static)

fpathconfPrint()
main()

/* 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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