writen.lc

unix network ,unix network unix network

/* include writen */
#include    "unp.h"##  1 ##src/lib/writen.c##

ssize_t                         /* Write "n" bytes to a descriptor. */##  2 ##src/lib/writen.c##
writen(int fd, const void *vptr, size_t n)##  3 ##src/lib/writen.c##
{##  4 ##src/lib/writen.c##
    size_t  nleft;##  5 ##src/lib/writen.c##
    ssize_t nwritten;##  6 ##src/lib/writen.c##
    const char *ptr;##  7 ##src/lib/writen.c##

    ptr = vptr;##  8 ##src/lib/writen.c##
    nleft = n;##  9 ##src/lib/writen.c##
    while (nleft > 0) {## 10 ##src/lib/writen.c##
        if ((nwritten = write(fd, ptr, nleft)) <= 0) {## 11 ##src/lib/writen.c##
            if (nwritten < 0 && errno == EINTR)## 12 ##src/lib/writen.c##
                nwritten = 0;   /* and call write() again */## 13 ##src/lib/writen.c##
            else## 14 ##src/lib/writen.c##
                return (-1);    /* error */## 15 ##src/lib/writen.c##
        }## 16 ##src/lib/writen.c##

        nleft -= nwritten;## 17 ##src/lib/writen.c##
        ptr += nwritten;## 18 ##src/lib/writen.c##
    }## 19 ##src/lib/writen.c##
    return (n);## 20 ##src/lib/writen.c##
}## 21 ##src/lib/writen.c##
/* end writen */

void## 22 ##src/lib/writen.c##
Writen(int fd, void *ptr, size_t nbytes)## 23 ##src/lib/writen.c##
{## 24 ##src/lib/writen.c##
    if (writen(fd, ptr, nbytes) != nbytes)## 25 ##src/lib/writen.c##
        err_sys("writen error");## 26 ##src/lib/writen.c##
}## 27 ##src/lib/writen.c##