57 lines
986 B
C
57 lines
986 B
C
#include "y16t_internal.h"
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#include <errno.h>
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#include <unistd.h>
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__attribute__((nonnull))
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static ssize_t y16t_pall_hret(const ssize_t tmp, size_t *dnb)
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{
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if(tmp > 0) {
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*dnb += tmp;
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return tmp;
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} else if(!tmp) {
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return -EIO;
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} else {
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return -errno;
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}
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}
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ssize_t y16t_pread_all(const int fd, void *buf, size_t nbyte, off_t offset)
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{
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size_t dnb = 0;
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while(nbyte) {
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const ssize_t tmp = y16t_pall_hret(pread(
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fd,
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buf + dnb,
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nbyte - dnb,
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offset + dnb), &dnb);
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switch(tmp) {
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case -EINTR:
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continue;
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default:
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if(tmp > 0) continue;
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return tmp;
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}
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}
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return (ssize_t)dnb;
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}
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ssize_t y16t_pwrite_all(const int fd, const void *buf, size_t nbyte, off_t offset)
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{
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size_t dnb = 0;
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while(nbyte) {
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const ssize_t tmp = y16t_pall_hret(pwrite(
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fd,
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buf + dnb,
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nbyte - dnb,
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offset + dnb), &dnb);
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switch(tmp) {
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case -EINTR:
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continue;
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default:
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if(tmp > 0) continue;
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return tmp;
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}
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}
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return (ssize_t)dnb;
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}
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