FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavutil/file_open.c
Date: 2026-04-23 02:20:26
Exec Total Coverage
Lines: 28 49 57.1%
Functions: 3 3 100.0%
Branches: 10 24 41.7%
Line Branch Exec Source
1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include "config.h"
20 #include "avutil.h"
21 #include "file_open.h"
22 #include "mem.h"
23 #include <stdarg.h>
24 #include <fcntl.h>
25 #include <sys/stat.h>
26 #if HAVE_UNISTD_H
27 #include <unistd.h>
28 #endif
29 #if HAVE_IO_H
30 #include <io.h>
31 #endif
32
33 #ifdef _WIN32
34 #undef open
35 #undef lseek
36 #undef stat
37 #undef fstat
38 #include <windows.h>
39 #include <share.h>
40 #include <errno.h>
41 #include "wchar_filename.h"
42
43 static int win32_open(const char *filename_utf8, int oflag, int pmode)
44 {
45 int fd;
46 wchar_t *filename_w;
47
48 /* convert UTF-8 to wide chars */
49 if (get_extended_win32_path(filename_utf8, &filename_w))
50 return -1;
51 if (!filename_w)
52 goto fallback;
53
54 fd = _wsopen(filename_w, oflag, SH_DENYNO, pmode);
55 av_freep(&filename_w);
56
57 if (fd != -1 || (oflag & O_CREAT))
58 return fd;
59
60 fallback:
61 /* filename may be in CP_ACP */
62 return _sopen(filename_utf8, oflag, SH_DENYNO, pmode);
63 }
64 #define open win32_open
65 #endif
66
67 111716 int avpriv_open(const char *filename, int flags, ...)
68 {
69 int fd;
70 111716 unsigned int mode = 0;
71 va_list ap;
72
73 111716 va_start(ap, flags);
74
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 111716 if (flags & O_CREAT)
75 4183 mode = va_arg(ap, unsigned int);
76 111716 va_end(ap);
77
78 #ifdef O_CLOEXEC
79 flags |= O_CLOEXEC;
80 #endif
81 #ifdef O_NOINHERIT
82 flags |= O_NOINHERIT;
83 #endif
84
85 111716 fd = open(filename, flags, mode);
86 #if HAVE_FCNTL
87
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 111716 if (fd != -1) {
88
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 111713 if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1)
89 ✗ av_log(NULL, AV_LOG_DEBUG, "Failed to set close on exec\n");
90 }
91 #endif
92
93 111716 return fd;
94 }
95
96 typedef struct FileLogContext {
97 const AVClass *class;
98 int log_offset;
99 void *log_ctx;
100 } FileLogContext;
101
102 static const AVClass file_log_ctx_class = {
103 .class_name = "TEMPFILE",
104 .item_name = av_default_item_name,
105 .option = NULL,
106 .version = LIBAVUTIL_VERSION_INT,
107 .log_level_offset_offset = offsetof(FileLogContext, log_offset),
108 .parent_log_context_offset = offsetof(FileLogContext, log_ctx),
109 };
110
111 1 int avpriv_tempfile(const char *prefix, char **filename, int log_offset, void *log_ctx)
112 {
113 1 FileLogContext file_log_ctx = { &file_log_ctx_class, log_offset, log_ctx };
114 1 int fd = -1;
115 #if HAVE_MKSTEMP
116 1 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
117 1 *filename = av_malloc(len);
118 #elif HAVE_TEMPNAM
119 void *ptr= tempnam(NULL, prefix);
120 if(!ptr)
121 ptr= tempnam(".", prefix);
122 *filename = av_strdup(ptr);
123 free(ptr);
124 #else
125 return AVERROR(ENOSYS);
126 #endif
127 /* -----common section-----*/
128
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 1 if (!*filename) {
129 ✗ av_log(&file_log_ctx, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
130 ✗ return AVERROR(ENOMEM);
131 }
132 #if !HAVE_MKSTEMP
133 # ifndef O_BINARY
134 # define O_BINARY 0
135 # endif
136 # ifndef O_EXCL
137 # define O_EXCL 0
138 # endif
139 fd = open(*filename, O_RDWR | O_BINARY | O_CREAT | O_EXCL, 0600);
140 #else
141 1 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
142 1 fd = mkstemp(*filename);
143 #if defined(_WIN32) || defined (__ANDROID__) || defined(__DJGPP__)
144 if (fd < 0) {
145 snprintf(*filename, len, "./%sXXXXXX", prefix);
146 fd = mkstemp(*filename);
147 }
148 #endif
149 #endif
150 /* -----common section-----*/
151
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 1 if (fd < 0) {
152 ✗ int err = AVERROR(errno);
153 ✗ av_log(&file_log_ctx, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
154 ✗ av_freep(filename);
155 ✗ return err;
156 }
157 1 return fd; /* success */
158 }
159
160 408 FILE *avpriv_fopen_utf8(const char *path, const char *mode)
161 {
162 int fd;
163 int access;
164 408 const char *m = mode;
165
166
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 408 switch (*m++) {
167 408 case 'r': access = O_RDONLY; break;
168 ✗ case 'w': access = O_CREAT|O_WRONLY|O_TRUNC; break;
169 ✗ case 'a': access = O_CREAT|O_WRONLY|O_APPEND; break;
170 ✗ default :
171 ✗ errno = EINVAL;
172 ✗ return NULL;
173 }
174
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 408 while (*m) {
175 ✗ if (*m == '+') {
176 ✗ access &= ~(O_RDONLY | O_WRONLY);
177 ✗ access |= O_RDWR;
178 ✗ } else if (*m == 'b') {
179 #ifdef O_BINARY
180 access |= O_BINARY;
181 #endif
182 ✗ } else if (*m) {
183 ✗ errno = EINVAL;
184 ✗ return NULL;
185 }
186 ✗ m++;
187 }
188 408 fd = avpriv_open(path, access, 0666);
189
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 408 if (fd == -1)
190 ✗ return NULL;
191 408 return fdopen(fd, mode);
192 }
193