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Annotation of embedaddon/ntp/lib/isc/unix/stdio.c, revision 1.1.1.1

1.1       misho       1: /*
                      2:  * Copyright (C) 2004, 2007  Internet Systems Consortium, Inc. ("ISC")
                      3:  * Copyright (C) 2000, 2001  Internet Software Consortium.
                      4:  *
                      5:  * Permission to use, copy, modify, and/or distribute this software for any
                      6:  * purpose with or without fee is hereby granted, provided that the above
                      7:  * copyright notice and this permission notice appear in all copies.
                      8:  *
                      9:  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
                     10:  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
                     11:  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
                     12:  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
                     13:  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
                     14:  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
                     15:  * PERFORMANCE OF THIS SOFTWARE.
                     16:  */
                     17: 
                     18: /* $Id: stdio.c,v 1.8 2007/06/19 23:47:18 tbox Exp $ */
                     19: 
                     20: #include <config.h>
                     21: 
                     22: #include <errno.h>
                     23: #include <unistd.h>
                     24: 
                     25: #include <isc/stdio.h>
                     26: 
                     27: #include "errno2result.h"
                     28: 
                     29: isc_result_t
                     30: isc_stdio_open(const char *filename, const char *mode, FILE **fp) {
                     31:        FILE *f;
                     32: 
                     33:        f = fopen(filename, mode);
                     34:        if (f == NULL)
                     35:                return (isc__errno2result(errno));
                     36:        *fp = f;
                     37:        return (ISC_R_SUCCESS);
                     38: }
                     39: 
                     40: isc_result_t
                     41: isc_stdio_close(FILE *f) {
                     42:        int r;
                     43: 
                     44:        r = fclose(f);
                     45:        if (r == 0)
                     46:                return (ISC_R_SUCCESS);
                     47:        else
                     48:                return (isc__errno2result(errno));
                     49: }
                     50: 
                     51: isc_result_t
                     52: isc_stdio_seek(FILE *f, long offset, int whence) {
                     53:        int r;
                     54: 
                     55:        r = fseek(f, offset, whence);
                     56:        if (r == 0)
                     57:                return (ISC_R_SUCCESS);
                     58:        else
                     59:                return (isc__errno2result(errno));
                     60: }
                     61: 
                     62: isc_result_t
                     63: isc_stdio_read(void *ptr, size_t size, size_t nmemb, FILE *f, size_t *nret) {
                     64:        isc_result_t result = ISC_R_SUCCESS;
                     65:        size_t r;
                     66: 
                     67:        clearerr(f);
                     68:        r = fread(ptr, size, nmemb, f);
                     69:        if (r != nmemb) {
                     70:                if (feof(f))
                     71:                        result = ISC_R_EOF;
                     72:                else
                     73:                        result = isc__errno2result(errno);
                     74:        }
                     75:        if (nret != NULL)
                     76:                *nret = r;
                     77:        return (result);
                     78: }
                     79: 
                     80: isc_result_t
                     81: isc_stdio_write(const void *ptr, size_t size, size_t nmemb, FILE *f,
                     82:               size_t *nret)
                     83: {
                     84:        isc_result_t result = ISC_R_SUCCESS;
                     85:        size_t r;
                     86: 
                     87:        clearerr(f);
                     88:        r = fwrite(ptr, size, nmemb, f);
                     89:        if (r != nmemb)
                     90:                result = isc__errno2result(errno);
                     91:        if (nret != NULL)
                     92:                *nret = r;
                     93:        return (result);
                     94: }
                     95: 
                     96: isc_result_t
                     97: isc_stdio_flush(FILE *f) {
                     98:        int r;
                     99: 
                    100:        r = fflush(f);
                    101:        if (r == 0)
                    102:                return (ISC_R_SUCCESS);
                    103:        else
                    104:                return (isc__errno2result(errno));
                    105: }
                    106: 
                    107: isc_result_t
                    108: isc_stdio_sync(FILE *f) {
                    109:        int r;
                    110: 
                    111:        r = fsync(fileno(f));
                    112:        if (r == 0)
                    113:                return (ISC_R_SUCCESS);
                    114:        else
                    115:                return (isc__errno2result(errno));
                    116: }
                    117: