diff options
Diffstat (limited to 'common/compat.c')
| -rw-r--r-- | common/compat.c | 158 |
1 files changed, 124 insertions, 34 deletions
diff --git a/common/compat.c b/common/compat.c index 33e608f..af28e1d 100644 --- a/common/compat.c +++ b/common/compat.c @@ -175,6 +175,10 @@ basename (const char *name) #endif /* HAVE_BASENAME */ #ifdef OS_UNIX +#include <sys/stat.h> +#include <sys/mman.h> +#include <fcntl.h> +#include <unistd.h> void p11_mutex_init (p11_mutex_t *mutex) @@ -196,6 +200,57 @@ p11_dl_error (void) return msg ? strdup (msg) : NULL; } +struct _p11_mmap { + int fd; + void *data; + size_t size; +}; + +p11_mmap * +p11_mmap_open (const char *path, + void **data, + size_t *size) +{ + struct stat sb; + p11_mmap *map; + + map = calloc (1, sizeof (p11_mmap)); + if (map == NULL) + return NULL; + + map->fd = open (path, O_RDONLY); + if (map->fd == -1) { + free (map); + return NULL; + } + + if (fstat (map->fd, &sb) < 0) { + close (map->fd); + free (map); + return NULL; + } + + map->size = sb.st_size; + map->data = mmap (NULL, map->size, PROT_READ, MAP_PRIVATE, map->fd, 0); + if (data == NULL) { + close (map->fd); + free (map); + return NULL; + } + + *data = map->data; + *size = map->size; + return map; +} + +void +p11_mmap_close (p11_mmap *map) +{ + munmap (map->data, map->size); + close (map->fd); + free (map); +} + #endif /* OS_UNIX */ #ifdef OS_WIN32 @@ -246,43 +301,78 @@ p11_thread_join (p11_thread_t thread) return 0; } -#endif /* OS_WIN32 */ +struct _p11_mmap { + HANDLE file; + HANDLE mapping; + void *data; +}; -#ifndef HAVE_STRNSTR +p11_mmap * +p11_mmap_open (const char *path, + void **data, + size_t *size) +{ + HANDLE mapping; + LARGE_INTEGER large; + DWORD errn; + p11_mmap *map; -/*- - * Copyright (c) 2001 Mike Barcroft <mike@FreeBSD.org> - * Copyright (c) 1990, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Chris Torek. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ + map = calloc (1, sizeof (p11_mmap)); + if (map == NULL) + return NULL; + + map->file = CreateFile (path, GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, NULL); + if (map->file == INVALID_HANDLE_VALUE) { + errn = GetLastError (); + free (map); + SetLastError (errn); + return NULL; + } + if (!GetFileSizeEx (map->file, &large)) { + errn = GetLastError (); + CloseHandle (map->file); + free (map); + SetLastError (errn); + return NULL; + } + + mapping = CreateFileMapping (map->file, NULL, PAGE_READONLY, 0, 0, NULL); + if (!mapping) { + errn = GetLastError (); + CloseHandle (map->file); + free (map); + SetLastError (errn); + return NULL; + } + + map->data = MapViewOfFile (mapping, FILE_MAP_READ, 0, 0, large.QuadPart); + CloseHandle (mapping); + + if (map->data == NULL) { + errn = GetLastError (); + CloseHandle (map->file); + free (map); + SetLastError (errn); + return NULL; + } + + *data = map->data; + *size = large.QuadPart; + return map; +} + +void +p11_mmap_close (p11_mmap *map) +{ + UnmapViewOfFile (map->data); + CloseHandle (map->file); + free (map); +} + +#endif /* OS_WIN32 */ + +#ifndef HAVE_STRNSTR #include <string.h> /* |