Mercurial > dovecot > core-2.2

annotate src/lib/read-full.c @ 23007:36e01285b5b8

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lib: buffer - Improve header comment for buffer_insert() and buffer_delete().
author Stephan Bosch <stephan.bosch@dovecot.fi>
date Mon, 18 Mar 2019 00:52:37 +0100
parents cb108f786fb4
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
22713
cb108f786fb4 Updated copyright notices to include the year 2018.
Stephan Bosch <stephan.bosch@dovecot.fi>
parents: 21390
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1 /* Copyright (c) 2003-2018 Dovecot authors, see the included COPYING file */
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2
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3 #include "lib.h"
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4 #include "read-full.h"
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5
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6 #include <unistd.h>
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7
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8 int read_full(int fd, void *data, size_t size)
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9 {
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10 ssize_t ret;
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11
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12 while (size > 0) {
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13 ret = read(fd, data, size < SSIZE_T_MAX ? size : SSIZE_T_MAX);
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14 if (ret <= 0)
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15 return ret;
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16
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17 data = PTR_OFFSET(data, ret);
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18 size -= ret;
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19 }
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20
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21 return 1;
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22 }
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23
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24 int pread_full(int fd, void *data, size_t size, off_t offset)
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25 {
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26 ssize_t ret;
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27
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28 while (size > 0) {
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29 ret = pread(fd, data, size < SSIZE_T_MAX ?
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30 size : SSIZE_T_MAX, offset);
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31 if (ret <= 0)
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32 return ret;
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33
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34 data = PTR_OFFSET(data, ret);
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35 size -= ret;
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36 offset += ret;
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37 }
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38
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39 return 1;
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40 }