diff options
Diffstat (limited to 'lib/sqfs/win32/io_file.c')
| -rw-r--r-- | lib/sqfs/win32/io_file.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/lib/sqfs/win32/io_file.c b/lib/sqfs/win32/io_file.c index c1849a8..836aa37 100644 --- a/lib/sqfs/win32/io_file.c +++ b/lib/sqfs/win32/io_file.c @@ -19,6 +19,7 @@ typedef struct { sqfs_file_t base; + bool readonly; sqfs_u64 size; HANDLE fd; } sqfs_file_stdio_t; @@ -32,6 +33,35 @@ static void stdio_destroy(sqfs_object_t *base) free(file); } +static sqfs_object_t *stdio_copy(const sqfs_object_t *base) +{ + const sqfs_file_stdio_t *file = (const sqfs_file_stdio_t *)base; + sqfs_file_stdio_t *copy; + BOOL ret; + + if (!file->readonly) { + SetLastError(ERROR_NOT_SUPPORTED); + return NULL; + } + + copy = calloc(1, sizeof(*copy)); + if (copy == NULL) + return NULL; + + memcpy(copy, file, sizeof(*file)); + + ret = DuplicateHandle(GetCurrentProcess(), file->fd, + GetCurrentProcess(), ©->fd, + 0, FALSE, DUPLICATE_SAME_ACCESS); + + if (!ret) { + free(copy); + return NULL; + } + + return (sqfs_object_t *)copy; +} + static int stdio_read_at(sqfs_file_t *base, sqfs_u64 offset, void *buffer, size_t size) { @@ -135,9 +165,11 @@ sqfs_file_t *sqfs_open_file(const char *filename, sqfs_u32 flags) return NULL; if (flags & SQFS_FILE_OPEN_READ_ONLY) { + file->readonly = true; access_flags = GENERIC_READ; creation_mode = OPEN_EXISTING; } else { + file->readonly = false; access_flags = GENERIC_READ | GENERIC_WRITE; if (flags & SQFS_FILE_OPEN_OVERWRITE) { @@ -166,5 +198,6 @@ sqfs_file_t *sqfs_open_file(const char *filename, sqfs_u32 flags) base->get_size = stdio_get_size; base->truncate = stdio_truncate; ((sqfs_object_t *)base)->destroy = stdio_destroy; + ((sqfs_object_t *)base)->copy = stdio_copy; return base; } |