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 #pragma ident "%Z%%M% %I% %E% SMI"
31
32 /*
33 * copylist copies a file into a block of memory, replacing newlines
34 * with null characters, and returns a pointer to the copy.
35 */
36
37 #include <sys/types.h>
38 #include <libgen.h>
39 #include <stdlib.h>
40 #include <sys/stat.h>
41 #include <stdio.h>
42 #include <limits.h>
43 #include <errno.h>
44
45 static char *
common_copylist(const char * filenm,off64_t size)46 common_copylist(const char *filenm, off64_t size)
47 {
48 FILE *strm;
49 int c;
50 char *ptr, *p;
51
52 if (size > SSIZE_MAX) {
53 errno = EOVERFLOW;
54 return (NULL);
55 }
56
57 /* get block of memory */
58 if ((ptr = malloc(size)) == NULL) {
59 return (NULL);
60 }
61
62 /* copy contents of file into memory block, replacing newlines */
63 /* with null characters */
64 if ((strm = fopen(filenm, "rF")) == NULL) {
65 return (NULL);
66 }
67 for (p = ptr; p < ptr + size && (c = getc(strm)) != EOF; p++) {
68 if (c == '\n')
69 *p = '\0';
70 else
71 *p = (char)c;
72 }
73 (void) fclose(strm);
74
75 return (ptr);
76 }
77
78
79 #ifndef _LP64
80 char *
copylist64(const char * filenm,off64_t * szptr)81 copylist64(const char *filenm, off64_t *szptr)
82 {
83 struct stat64 stbuf;
84
85 /* get size of file */
86 if (stat64(filenm, &stbuf) == -1) {
87 return (NULL);
88 }
89 *szptr = stbuf.st_size;
90
91 return (common_copylist(filenm, stbuf.st_size));
92 }
93 #endif
94
95
96 char *
copylist(const char * filenm,off_t * szptr)97 copylist(const char *filenm, off_t *szptr)
98 {
99 struct stat64 stbuf;
100
101 /* get size of file */
102 if (stat64(filenm, &stbuf) == -1) {
103 return (NULL);
104 }
105
106 if (stbuf.st_size > LONG_MAX) {
107 errno = EOVERFLOW;
108 return (NULL);
109 }
110
111 *szptr = (off_t)stbuf.st_size;
112
113 return (common_copylist(filenm, stbuf.st_size));
114 }
115