diff options
author | kientzle <kientzle@FreeBSD.org> | 2009-04-17 00:50:00 +0000 |
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committer | kientzle <kientzle@FreeBSD.org> | 2009-04-17 00:50:00 +0000 |
commit | ef74aa99b9472fb8e958a399ff6b19fd337b724d (patch) | |
tree | c31e0bf4145168c53a8e70873f148e6872051759 | |
parent | 5387456c70c14b686b55a811d0f071abd3a49fd8 (diff) | |
download | FreeBSD-src-ef74aa99b9472fb8e958a399ff6b19fd337b724d.zip FreeBSD-src-ef74aa99b9472fb8e958a399ff6b19fd337b724d.tar.gz |
Don't use the open callback, which is deprecated (because it's
never necessary). Also, simplify just a tad by delegating
to read_open_fd() when we know the file descriptor, instead
of duplicating that logic.
-rw-r--r-- | lib/libarchive/archive_read_open_fd.c | 59 | ||||
-rw-r--r-- | lib/libarchive/archive_read_open_file.c | 42 | ||||
-rw-r--r-- | lib/libarchive/archive_read_open_filename.c | 125 |
3 files changed, 84 insertions, 142 deletions
diff --git a/lib/libarchive/archive_read_open_fd.c b/lib/libarchive/archive_read_open_fd.c index 13afe63..a7c2e29 100644 --- a/lib/libarchive/archive_read_open_fd.c +++ b/lib/libarchive/archive_read_open_fd.c @@ -52,7 +52,6 @@ struct read_fd_data { }; static int file_close(struct archive *, void *); -static int file_open(struct archive *, void *); static ssize_t file_read(struct archive *, void *, const void **buff); #if ARCHIVE_API_VERSION < 2 static ssize_t file_skip(struct archive *, void *, size_t request); @@ -63,50 +62,41 @@ static off_t file_skip(struct archive *, void *, off_t request); int archive_read_open_fd(struct archive *a, int fd, size_t block_size) { + struct stat st; struct read_fd_data *mine; + void *b; - mine = (struct read_fd_data *)malloc(sizeof(*mine)); - if (mine == NULL) { - archive_set_error(a, ENOMEM, "No memory"); + if (fstat(fd, &st) != 0) { + archive_set_error(a, errno, "Can't stat fd %d", fd); return (ARCHIVE_FATAL); } - mine->block_size = block_size; - mine->buffer = malloc(mine->block_size); - if (mine->buffer == NULL) { + + mine = (struct read_fd_data *)malloc(sizeof(*mine)); + b = malloc(block_size); + if (mine == NULL || b == NULL) { archive_set_error(a, ENOMEM, "No memory"); free(mine); + free(b); return (ARCHIVE_FATAL); } + mine->block_size = block_size; + mine->buffer = b; mine->fd = fd; - /* lseek() hardly ever works, so disable it by default. See below. */ - mine->can_skip = 0; - return (archive_read_open2(a, mine, file_open, file_read, file_skip, file_close)); -} - -static int -file_open(struct archive *a, void *client_data) -{ - struct read_fd_data *mine = (struct read_fd_data *)client_data; - struct stat st; - - if (fstat(mine->fd, &st) != 0) { - archive_set_error(a, errno, "Can't stat fd %d", mine->fd); - return (ARCHIVE_FATAL); - } - + /* + * Skip support is a performance optimization for anything + * that supports lseek(). On FreeBSD, only regular files and + * raw disk devices support lseek() and there's no portable + * way to determine if a device is a raw disk device, so we + * only enable this optimization for regular files. + */ if (S_ISREG(st.st_mode)) { archive_read_extract_set_skip_file(a, st.st_dev, st.st_ino); - /* - * Enabling skip here is a performance optimization for - * anything that supports lseek(). On FreeBSD, only - * regular files and raw disk devices support lseek() and - * there's no portable way to determine if a device is - * a raw disk device, so we only enable this optimization - * for regular files. - */ mine->can_skip = 1; - } - return (ARCHIVE_OK); + } else + mine->can_skip = 0; + + return (archive_read_open2(a, mine, + NULL, file_read, file_skip, file_close)); } static ssize_t @@ -180,8 +170,7 @@ file_close(struct archive *a, void *client_data) struct read_fd_data *mine = (struct read_fd_data *)client_data; (void)a; /* UNUSED */ - if (mine->buffer != NULL) - free(mine->buffer); + free(mine->buffer); free(mine); return (ARCHIVE_OK); } diff --git a/lib/libarchive/archive_read_open_file.c b/lib/libarchive/archive_read_open_file.c index eb44084..e77d447 100644 --- a/lib/libarchive/archive_read_open_file.c +++ b/lib/libarchive/archive_read_open_file.c @@ -55,7 +55,6 @@ struct read_FILE_data { }; static int file_close(struct archive *, void *); -static int file_open(struct archive *, void *); static ssize_t file_read(struct archive *, void *, const void **buff); #if ARCHIVE_API_VERSION < 2 static ssize_t file_skip(struct archive *, void *, size_t request); @@ -66,45 +65,36 @@ static off_t file_skip(struct archive *, void *, off_t request); int archive_read_open_FILE(struct archive *a, FILE *f) { + struct stat st; struct read_FILE_data *mine; + size_t block_size = 128 * 1024; + void *b; mine = (struct read_FILE_data *)malloc(sizeof(*mine)); - if (mine == NULL) { - archive_set_error(a, ENOMEM, "No memory"); - return (ARCHIVE_FATAL); - } - mine->block_size = 128 * 1024; - mine->buffer = malloc(mine->block_size); - if (mine->buffer == NULL) { + b = malloc(block_size); + if (mine == NULL || b == NULL) { archive_set_error(a, ENOMEM, "No memory"); free(mine); + free(b); return (ARCHIVE_FATAL); } + mine->block_size = block_size; + mine->buffer = b; mine->f = f; - /* Suppress skip by default. See below. */ - mine->can_skip = 0; - return (archive_read_open2(a, mine, file_open, file_read, - file_skip, file_close)); -} - -static int -file_open(struct archive *a, void *client_data) -{ - struct read_FILE_data *mine = (struct read_FILE_data *)client_data; - struct stat st; - /* - * If we can't fstat() the file, it may just be that - * it's not a file. (FILE * objects can wrap many kinds - * of I/O streams.) + * If we can't fstat() the file, it may just be that it's not + * a file. (FILE * objects can wrap many kinds of I/O + * streams, some of which don't support fileno()).) */ if (fstat(fileno(mine->f), &st) == 0 && S_ISREG(st.st_mode)) { archive_read_extract_set_skip_file(a, st.st_dev, st.st_ino); - /* Enable the seek optimization for regular files. */ + /* Enable the seek optimization only for regular files. */ mine->can_skip = 1; - } + } else + mine->can_skip = 0; - return (ARCHIVE_OK); + return (archive_read_open2(a, mine, NULL, file_read, + file_skip, file_close)); } static ssize_t diff --git a/lib/libarchive/archive_read_open_filename.c b/lib/libarchive/archive_read_open_filename.c index 9745b44..e86a93d 100644 --- a/lib/libarchive/archive_read_open_filename.c +++ b/lib/libarchive/archive_read_open_filename.c @@ -61,7 +61,6 @@ struct read_file_data { }; static int file_close(struct archive *, void *); -static int file_open(struct archive *, void *); static ssize_t file_read(struct archive *, void *, const void **buff); #if ARCHIVE_API_VERSION < 2 static ssize_t file_skip(struct archive *, void *, size_t request); @@ -80,78 +79,54 @@ int archive_read_open_filename(struct archive *a, const char *filename, size_t block_size) { + struct stat st; struct read_file_data *mine; + void *b; + int fd; - if (filename == NULL || filename[0] == '\0') { - mine = (struct read_file_data *)malloc(sizeof(*mine)); - if (mine == NULL) { - archive_set_error(a, ENOMEM, "No memory"); - return (ARCHIVE_FATAL); - } - mine->filename[0] = '\0'; - } else { - mine = (struct read_file_data *)malloc(sizeof(*mine) + strlen(filename)); - if (mine == NULL) { - archive_set_error(a, ENOMEM, "No memory"); - return (ARCHIVE_FATAL); - } - strcpy(mine->filename, filename); - } - mine->block_size = block_size; - mine->buffer = NULL; - mine->fd = -1; - /* lseek() almost never works; disable it by default. See below. */ - mine->can_skip = 0; - return (archive_read_open2(a, mine, file_open, file_read, file_skip, file_close)); -} + if (filename == NULL || filename[0] == '\0') + return (archive_read_open_fd(a, 0, block_size)); -static int -file_open(struct archive *a, void *client_data) -{ - struct read_file_data *mine = (struct read_file_data *)client_data; - struct stat st; - - mine->buffer = malloc(mine->block_size); - if (mine->buffer == NULL) { - archive_set_error(a, ENOMEM, "No memory"); + fd = open(filename, O_RDONLY | O_BINARY); + if (fd < 0) { + archive_set_error(a, errno, "Failed to open '%s'", filename); return (ARCHIVE_FATAL); } - if (mine->filename[0] != '\0') - mine->fd = open(mine->filename, O_RDONLY | O_BINARY); - else - mine->fd = 0; /* Fake "open" for stdin. */ - if (mine->fd < 0) { - archive_set_error(a, errno, "Failed to open '%s'", - mine->filename); + if (fstat(fd, &st) != 0) { + archive_set_error(a, errno, "Can't stat '%s'", filename); return (ARCHIVE_FATAL); } - if (fstat(mine->fd, &st) == 0) { - /* If we're reading a file from disk, ensure that we don't - overwrite it with an extracted file. */ - if (S_ISREG(st.st_mode)) { - archive_read_extract_set_skip_file(a, st.st_dev, st.st_ino); - /* - * Enabling skip here is a performance - * optimization for anything that supports - * lseek(). On FreeBSD, only regular files - * and raw disk devices support lseek() and - * there's no portable way to determine if a - * device is a raw disk device, so we only - * enable this optimization for regular files. - */ - mine->can_skip = 1; - } - /* Remember mode so close can decide whether to flush. */ - mine->st_mode = st.st_mode; - } else { - if (mine->filename[0] == '\0') - archive_set_error(a, errno, "Can't stat stdin"); - else - archive_set_error(a, errno, "Can't stat '%s'", - mine->filename); + + mine = (struct read_file_data *)malloc(sizeof(*mine) + strlen(filename)); + b = malloc(block_size); + if (mine == NULL || b == NULL) { + archive_set_error(a, ENOMEM, "No memory"); + free(mine); + free(b); return (ARCHIVE_FATAL); } - return (0); + strcpy(mine->filename, filename); + mine->block_size = block_size; + mine->buffer = b; + mine->fd = fd; + /* Remember mode so close can decide whether to flush. */ + mine->st_mode = st.st_mode; + /* If we're reading a file from disk, ensure that we don't + overwrite it with an extracted file. */ + if (S_ISREG(st.st_mode)) { + archive_read_extract_set_skip_file(a, st.st_dev, st.st_ino); + /* + * Skip is a performance optimization for anything + * that supports lseek(). Generally, that only + * includes regular files and possibly raw disk + * devices, but there's no good portable way to detect + * raw disks. + */ + mine->can_skip = 1; + } else + mine->can_skip = 0; + return (archive_read_open2(a, mine, + NULL, file_read, file_skip, file_close)); } static ssize_t @@ -163,11 +138,8 @@ file_read(struct archive *a, void *client_data, const void **buff) *buff = mine->buffer; bytes_read = read(mine->fd, mine->buffer, mine->block_size); if (bytes_read < 0) { - if (mine->filename[0] == '\0') - archive_set_error(a, errno, "Error reading stdin"); - else - archive_set_error(a, errno, "Error reading '%s'", - mine->filename); + archive_set_error(a, errno, "Error reading '%s'", + mine->filename); } return (bytes_read); } @@ -217,15 +189,8 @@ file_skip(struct archive *a, void *client_data, off_t request) * likely caused by a programmer error (too large request) * or a corrupted archive file. */ - if (mine->filename[0] == '\0') - /* - * Should never get here, since lseek() on stdin ought - * to return an ESPIPE error. - */ - archive_set_error(a, errno, "Error seeking in stdin"); - else - archive_set_error(a, errno, "Error seeking in '%s'", - mine->filename); + archive_set_error(a, errno, "Error seeking in '%s'", + mine->filename); return (-1); } return (new_offset - old_offset); @@ -259,9 +224,7 @@ file_close(struct archive *a, void *client_data) mine->block_size); } while (bytesRead > 0); } - /* If a named file was opened, then it needs to be closed. */ - if (mine->filename[0] != '\0') - close(mine->fd); + close(mine->fd); } free(mine->buffer); free(mine); |