1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1988 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * copylist copies a file into a block of memory, replacing newlines
32 * with null characters, and returns a pointer to the copy.
33 */
34
35 #include <sys/types.h>
36 #include <libgen.h>
37 #include <stdlib.h>
38 #include <sys/stat.h>
39 #include <stdio.h>
40 #include <limits.h>
41 #include <errno.h>
42
43 static char *
common_copylist(const char * filenm,off64_t size)44 common_copylist(const char *filenm, off64_t size)
45 {
46 FILE *strm;
47 int c;
48 char *ptr, *p;
49
50 if (size > SSIZE_MAX) {
51 errno = EOVERFLOW;
52 return (NULL);
53 }
54
55 /* get block of memory */
56 if ((ptr = malloc(size)) == NULL) {
57 return (NULL);
58 }
59
60 /* copy contents of file into memory block, replacing newlines */
61 /* with null characters */
62 if ((strm = fopen(filenm, "rF")) == NULL) {
63 return (NULL);
64 }
65 for (p = ptr; p < ptr + size && (c = getc(strm)) != EOF; p++) {
66 if (c == '\n')
67 *p = '\0';
68 else
69 *p = (char)c;
70 }
71 (void) fclose(strm);
72
73 return (ptr);
74 }
75
76
77 #ifndef _LP64
78 char *
copylist64(const char * filenm,off64_t * szptr)79 copylist64(const char *filenm, off64_t *szptr)
80 {
81 struct stat64 stbuf;
82
83 /* get size of file */
84 if (stat64(filenm, &stbuf) == -1) {
85 return (NULL);
86 }
87 *szptr = stbuf.st_size;
88
89 return (common_copylist(filenm, stbuf.st_size));
90 }
91 #endif
92
93
94 char *
copylist(const char * filenm,off_t * szptr)95 copylist(const char *filenm, off_t *szptr)
96 {
97 struct stat64 stbuf;
98
99 /* get size of file */
100 if (stat64(filenm, &stbuf) == -1) {
101 return (NULL);
102 }
103
104 if (stbuf.st_size > LONG_MAX) {
105 errno = EOVERFLOW;
106 return (NULL);
107 }
108
109 *szptr = (off_t)stbuf.st_size;
110
111 return (common_copylist(filenm, stbuf.st_size));
112 }
113