diff options
Diffstat (limited to 'libarchive/archive_read_disk_entry_from_file.c')
| -rw-r--r-- | libarchive/archive_read_disk_entry_from_file.c | 561 |
1 files changed, 498 insertions, 63 deletions
diff --git a/libarchive/archive_read_disk_entry_from_file.c b/libarchive/archive_read_disk_entry_from_file.c index 7473c50..8ce88b3 100644 --- a/libarchive/archive_read_disk_entry_from_file.c +++ b/libarchive/archive_read_disk_entry_from_file.c @@ -1,5 +1,6 @@ /*- * Copyright (c) 2003-2009 Tim Kientzle + * Copyright (c) 2010 Michihiro NAKAJIMA * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -26,6 +27,9 @@ #include "archive_platform.h" __FBSDID("$FreeBSD: head/lib/libarchive/archive_read_disk_entry_from_file.c 201084 2009-12-28 02:14:09Z kientzle $"); +/* This is the tree-walking code for POSIX systems. */ +#if !defined(_WIN32) || defined(__CYGWIN__) + #ifdef HAVE_SYS_TYPES_H /* Mac OSX requires sys/types.h before sys/acl.h. */ #include <sys/types.h> @@ -36,6 +40,9 @@ __FBSDID("$FreeBSD: head/lib/libarchive/archive_read_disk_entry_from_file.c 2010 #ifdef HAVE_SYS_EXTATTR_H #include <sys/extattr.h> #endif +#ifdef HAVE_SYS_IOCTL_H +#include <sys/ioctl.h> +#endif #ifdef HAVE_SYS_PARAM_H #include <sys/param.h> #endif @@ -45,20 +52,48 @@ __FBSDID("$FreeBSD: head/lib/libarchive/archive_read_disk_entry_from_file.c 2010 #ifdef HAVE_SYS_XATTR_H #include <sys/xattr.h> #endif +#ifdef HAVE_SYS_EA_H +#include <sys/ea.h> +#endif #ifdef HAVE_ACL_LIBACL_H #include <acl/libacl.h> #endif #ifdef HAVE_ATTR_XATTR_H #include <attr/xattr.h> #endif +#ifdef HAVE_COPYFILE_H +#include <copyfile.h> +#endif #ifdef HAVE_ERRNO_H #include <errno.h> #endif +#ifdef HAVE_FCNTL_H +#include <fcntl.h> +#endif #ifdef HAVE_LIMITS_H #include <limits.h> #endif -#ifdef HAVE_WINDOWS_H -#include <windows.h> +#ifdef HAVE_LINUX_FIEMAP_H +#include <linux/fiemap.h> +#endif +#ifdef HAVE_LINUX_FS_H +#include <linux/fs.h> +#endif +/* + * Some Linux distributions have both linux/ext2_fs.h and ext2fs/ext2_fs.h. + * As the include guards don't agree, the order of include is important. + */ +#ifdef HAVE_LINUX_EXT2_FS_H +#include <linux/ext2_fs.h> /* for Linux file flags */ +#endif +#if defined(HAVE_EXT2FS_EXT2_FS_H) && !defined(__CYGWIN__) +#include <ext2fs/ext2_fs.h> /* Linux file flags, broken on Cygwin */ +#endif +#ifdef HAVE_PATHS_H +#include <paths.h> +#endif +#ifdef HAVE_UNISTD_H +#include <unistd.h> #endif #include "archive.h" @@ -78,13 +113,18 @@ __FBSDID("$FreeBSD: head/lib/libarchive/archive_read_disk_entry_from_file.c 2010 static int setup_acls_posix1e(struct archive_read_disk *, struct archive_entry *, int fd); +static int setup_mac_metadata(struct archive_read_disk *, + struct archive_entry *, int fd); static int setup_xattrs(struct archive_read_disk *, struct archive_entry *, int fd); +static int setup_sparse(struct archive_read_disk *, + struct archive_entry *, int fd); int archive_read_disk_entry_from_file(struct archive *_a, struct archive_entry *entry, - int fd, const struct stat *st) + int fd, + const struct stat *st) { struct archive_read_disk *a = (struct archive_read_disk *)_a; const char *path, *name; @@ -97,54 +137,35 @@ archive_read_disk_entry_from_file(struct archive *_a, if (path == NULL) path = archive_entry_pathname(entry); -#ifdef EXT2_IOC_GETFLAGS - /* Linux requires an extra ioctl to pull the flags. Although - * this is an extra step, it has a nice side-effect: We get an - * open file descriptor which we can use in the subsequent lookups. */ - if ((S_ISREG(st->st_mode) || S_ISDIR(st->st_mode))) { - if (fd < 0) - fd = open(pathname, O_RDONLY | O_NONBLOCK | O_BINARY); - if (fd >= 0) { - unsigned long stflags; - int r = ioctl(fd, EXT2_IOC_GETFLAGS, &stflags); - if (r == 0 && stflags != 0) - archive_entry_set_fflags(entry, stflags, 0); - } - } -#endif - - if (st == NULL) { - /* TODO: On Windows, use GetFileInfoByHandle() here. - * Using Windows stat() call is badly broken, but - * even the stat() wrapper has problems because - * 'struct stat' is broken on Windows. - */ + if (a->tree == NULL) { + if (st == NULL) { #if HAVE_FSTAT - if (fd >= 0) { - if (fstat(fd, &s) != 0) { - archive_set_error(&a->archive, errno, - "Can't fstat"); - return (ARCHIVE_FAILED); - } - } else + if (fd >= 0) { + if (fstat(fd, &s) != 0) { + archive_set_error(&a->archive, errno, + "Can't fstat"); + return (ARCHIVE_FAILED); + } + } else #endif #if HAVE_LSTAT - if (!a->follow_symlinks) { - if (lstat(path, &s) != 0) { + if (!a->follow_symlinks) { + if (lstat(path, &s) != 0) { + archive_set_error(&a->archive, errno, + "Can't lstat %s", path); + return (ARCHIVE_FAILED); + } + } else +#endif + if (stat(path, &s) != 0) { archive_set_error(&a->archive, errno, - "Can't lstat %s", path); + "Can't stat %s", path); return (ARCHIVE_FAILED); } - } else -#endif - if (stat(path, &s) != 0) { - archive_set_error(&a->archive, errno, - "Can't lstat %s", path); - return (ARCHIVE_FAILED); + st = &s; } - st = &s; + archive_entry_copy_stat(entry, st); } - archive_entry_copy_stat(entry, st); /* Lookup uname/gname */ name = archive_read_disk_uname(_a, archive_entry_uid(entry)); @@ -161,30 +182,185 @@ archive_read_disk_entry_from_file(struct archive *_a, archive_entry_set_fflags(entry, st->st_flags, 0); #endif -#ifdef HAVE_READLINK +#if defined(EXT2_IOC_GETFLAGS) && defined(HAVE_WORKING_EXT2_IOC_GETFLAGS) + /* Linux requires an extra ioctl to pull the flags. Although + * this is an extra step, it has a nice side-effect: We get an + * open file descriptor which we can use in the subsequent lookups. */ + if ((S_ISREG(st->st_mode) || S_ISDIR(st->st_mode))) { + if (fd < 0) + fd = open(path, O_RDONLY | O_NONBLOCK); + if (fd >= 0) { + unsigned long stflags; + int r = ioctl(fd, EXT2_IOC_GETFLAGS, &stflags); + if (r == 0 && stflags != 0) + archive_entry_set_fflags(entry, stflags, 0); + } + } +#endif + +#if defined(HAVE_READLINK) || defined(HAVE_READLINKAT) if (S_ISLNK(st->st_mode)) { - char linkbuffer[PATH_MAX + 1]; - int lnklen = readlink(path, linkbuffer, PATH_MAX); + size_t linkbuffer_len = st->st_size + 1; + char *linkbuffer; + int lnklen; + + linkbuffer = malloc(linkbuffer_len); + if (linkbuffer == NULL) { + archive_set_error(&a->archive, ENOMEM, + "Couldn't read link data"); + return (ARCHIVE_FAILED); + } +#ifdef HAVE_READLINKAT + if (a->entry_wd_fd >= 0) + lnklen = readlinkat(a->entry_wd_fd, path, + linkbuffer, linkbuffer_len); + else +#endif /* HAVE_READLINKAT */ + lnklen = readlink(path, linkbuffer, linkbuffer_len); if (lnklen < 0) { archive_set_error(&a->archive, errno, "Couldn't read link data"); + free(linkbuffer); return (ARCHIVE_FAILED); } linkbuffer[lnklen] = 0; archive_entry_set_symlink(entry, linkbuffer); + free(linkbuffer); } -#endif +#endif /* HAVE_READLINK || HAVE_READLINKAT */ r = setup_acls_posix1e(a, entry, fd); r1 = setup_xattrs(a, entry, fd); if (r1 < r) r = r1; + r1 = setup_mac_metadata(a, entry, fd); + if (r1 < r) + r = r1; + r1 = setup_sparse(a, entry, fd); + if (r1 < r) + r = r1; + /* If we opened the file earlier in this function, close it. */ if (initial_fd != fd) close(fd); return (r); } +#if defined(__APPLE__) && defined(HAVE_COPYFILE_H) +/* + * The Mac OS "copyfile()" API copies the extended metadata for a + * file into a separate file in AppleDouble format (see RFC 1740). + * + * Mac OS tar and cpio implementations store this extended + * metadata as a separate entry just before the regular entry + * with a "._" prefix added to the filename. + * + * Note that this is currently done unconditionally; the tar program has + * an option to discard this information before the archive is written. + * + * TODO: If there's a failure, report it and return ARCHIVE_WARN. + */ +static int +setup_mac_metadata(struct archive_read_disk *a, + struct archive_entry *entry, int fd) +{ + int tempfd = -1; + int copyfile_flags = COPYFILE_NOFOLLOW | COPYFILE_ACL | COPYFILE_XATTR; + struct stat copyfile_stat; + int ret = ARCHIVE_OK; + void *buff; + int have_attrs; + const char *name, *tempdir, *tempfile = NULL; + + name = archive_entry_sourcepath(entry); + if (name == NULL) + name = archive_entry_pathname(entry); + if (name == NULL) { + archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, + "Can't open file to read extended attributes: No name"); + return (ARCHIVE_WARN); + } + + /* Short-circuit if there's nothing to do. */ + have_attrs = copyfile(name, NULL, 0, copyfile_flags | COPYFILE_CHECK); + if (have_attrs == -1) { + archive_set_error(&a->archive, errno, + "Could not check extended attributes"); + return (ARCHIVE_WARN); + } + if (have_attrs == 0) + return (ARCHIVE_OK); + + tempdir = NULL; + if (issetugid() == 0) + tempdir = getenv("TMPDIR"); + if (tempdir == NULL) + tempdir = _PATH_TMP; + tempfile = tempnam(tempdir, "tar.md."); + + /* XXX I wish copyfile() could pack directly to a memory + * buffer; that would avoid the temp file here. For that + * matter, it would be nice if fcopyfile() actually worked, + * that would reduce the many open/close races here. */ + if (copyfile(name, tempfile, 0, copyfile_flags | COPYFILE_PACK)) { + archive_set_error(&a->archive, errno, + "Could not pack extended attributes"); + ret = ARCHIVE_WARN; + goto cleanup; + } + tempfd = open(tempfile, O_RDONLY); + if (tempfd < 0) { + archive_set_error(&a->archive, errno, + "Could not open extended attribute file"); + ret = ARCHIVE_WARN; + goto cleanup; + } + if (fstat(tempfd, ©file_stat)) { + archive_set_error(&a->archive, errno, + "Could not check size of extended attributes"); + ret = ARCHIVE_WARN; + goto cleanup; + } + buff = malloc(copyfile_stat.st_size); + if (buff == NULL) { + archive_set_error(&a->archive, errno, + "Could not allocate memory for extended attributes"); + ret = ARCHIVE_WARN; + goto cleanup; + } + if (copyfile_stat.st_size != read(tempfd, buff, copyfile_stat.st_size)) { + archive_set_error(&a->archive, errno, + "Could not read extended attributes into memory"); + ret = ARCHIVE_WARN; + goto cleanup; + } + archive_entry_copy_mac_metadata(entry, buff, copyfile_stat.st_size); + +cleanup: + if (tempfd >= 0) + close(tempfd); + if (tempfile != NULL) + unlink(tempfile); + return (ret); +} + +#else + +/* + * Stub implementation for non-Mac systems. + */ +static int +setup_mac_metadata(struct archive_read_disk *a, + struct archive_entry *entry, int fd) +{ + (void)a; /* UNUSED */ + (void)entry; /* UNUSED */ + (void)fd; /* UNUSED */ + return (ARCHIVE_OK); +} +#endif + + #ifdef HAVE_POSIX_ACL static void setup_acl_posix1e(struct archive_read_disk *a, struct archive_entry *entry, acl_t acl, int archive_entry_acl_type); @@ -307,10 +483,12 @@ setup_acls_posix1e(struct archive_read_disk *a, } #endif -#if HAVE_LISTXATTR && HAVE_LLISTXATTR && HAVE_GETXATTR && HAVE_LGETXATTR +#if (HAVE_FGETXATTR && HAVE_FLISTXATTR && HAVE_LISTXATTR && \ + HAVE_LLISTXATTR && HAVE_GETXATTR && HAVE_LGETXATTR) || \ + (HAVE_FGETEA && HAVE_FLISTEA && HAVE_LISTEA) /* - * Linux extended attribute support. + * Linux and AIX extended attribute support. * * TODO: By using a stack-allocated buffer for the first * call to getxattr(), we might be able to avoid the second @@ -329,16 +507,25 @@ setup_xattr(struct archive_read_disk *a, void *value = NULL; const char *accpath; - (void)fd; /* UNUSED */ - accpath = archive_entry_sourcepath(entry); if (accpath == NULL) accpath = archive_entry_pathname(entry); - if (!a->follow_symlinks) +#if HAVE_FGETXATTR + if (fd >= 0) + size = fgetxattr(fd, name, NULL, 0); + else if (!a->follow_symlinks) size = lgetxattr(accpath, name, NULL, 0); else size = getxattr(accpath, name, NULL, 0); +#elif HAVE_FGETEA + if (fd >= 0) + size = fgetea(fd, name, NULL, 0); + else if (!a->follow_symlinks) + size = lgetea(accpath, name, NULL, 0); + else + size = getea(accpath, name, NULL, 0); +#endif if (size == -1) { archive_set_error(&a->archive, errno, @@ -351,10 +538,21 @@ setup_xattr(struct archive_read_disk *a, return (ARCHIVE_FATAL); } - if (!a->follow_symlinks) +#if HAVE_FGETXATTR + if (fd >= 0) + size = fgetxattr(fd, name, value, size); + else if (!a->follow_symlinks) size = lgetxattr(accpath, name, value, size); else size = getxattr(accpath, name, value, size); +#elif HAVE_FGETEA + if (fd >= 0) + size = fgetea(fd, name, value, size); + else if (!a->follow_symlinks) + size = lgetea(accpath, name, value, size); + else + size = getea(accpath, name, value, size); +#endif if (size == -1) { archive_set_error(&a->archive, errno, @@ -376,18 +574,28 @@ setup_xattrs(struct archive_read_disk *a, const char *path; ssize_t list_size; - path = archive_entry_sourcepath(entry); if (path == NULL) path = archive_entry_pathname(entry); - if (!a->follow_symlinks) +#if HAVE_FLISTXATTR + if (fd >= 0) + list_size = flistxattr(fd, NULL, 0); + else if (!a->follow_symlinks) list_size = llistxattr(path, NULL, 0); else list_size = listxattr(path, NULL, 0); +#elif HAVE_FLISTEA + if (fd >= 0) + list_size = flistea(fd, NULL, 0); + else if (!a->follow_symlinks) + list_size = llistea(path, NULL, 0); + else + list_size = listea(path, NULL, 0); +#endif if (list_size == -1) { - if (errno == ENOTSUP) + if (errno == ENOTSUP || errno == ENOSYS) return (ARCHIVE_OK); archive_set_error(&a->archive, errno, "Couldn't list extended attributes"); @@ -402,10 +610,21 @@ setup_xattrs(struct archive_read_disk *a, return (ARCHIVE_FATAL); } - if (!a->follow_symlinks) +#if HAVE_FLISTXATTR + if (fd >= 0) + list_size = flistxattr(fd, list, list_size); + else if (!a->follow_symlinks) list_size = llistxattr(path, list, list_size); else list_size = listxattr(path, list, list_size); +#elif HAVE_FLISTEA + if (fd >= 0) + list_size = flistea(fd, list, list_size); + else if (!a->follow_symlinks) + list_size = llistea(path, list, list_size); + else + list_size = listea(path, list, list_size); +#endif if (list_size == -1) { archive_set_error(&a->archive, errno, @@ -449,13 +668,13 @@ setup_xattr(struct archive_read_disk *a, struct archive_entry *entry, void *value = NULL; const char *accpath; - (void)fd; /* UNUSED */ - accpath = archive_entry_sourcepath(entry); if (accpath == NULL) accpath = archive_entry_pathname(entry); - if (!a->follow_symlinks) + if (fd >= 0) + size = extattr_get_fd(fd, namespace, name, NULL, 0); + else if (!a->follow_symlinks) size = extattr_get_link(accpath, namespace, name, NULL, 0); else size = extattr_get_file(accpath, namespace, name, NULL, 0); @@ -471,7 +690,9 @@ setup_xattr(struct archive_read_disk *a, struct archive_entry *entry, return (ARCHIVE_FATAL); } - if (!a->follow_symlinks) + if (fd >= 0) + size = extattr_get_fd(fd, namespace, name, value, size); + else if (!a->follow_symlinks) size = extattr_get_link(accpath, namespace, name, value, size); else size = extattr_get_file(accpath, namespace, name, value, size); @@ -502,7 +723,9 @@ setup_xattrs(struct archive_read_disk *a, if (path == NULL) path = archive_entry_pathname(entry); - if (!a->follow_symlinks) + if (fd >= 0) + list_size = extattr_list_fd(fd, namespace, NULL, 0); + else if (!a->follow_symlinks) list_size = extattr_list_link(path, namespace, NULL, 0); else list_size = extattr_list_file(path, namespace, NULL, 0); @@ -523,7 +746,9 @@ setup_xattrs(struct archive_read_disk *a, return (ARCHIVE_FATAL); } - if (!a->follow_symlinks) + if (fd >= 0) + list_size = extattr_list_fd(fd, namespace, list, list_size); + else if (!a->follow_symlinks) list_size = extattr_list_link(path, namespace, list, list_size); else list_size = extattr_list_file(path, namespace, list, list_size); @@ -568,3 +793,213 @@ setup_xattrs(struct archive_read_disk *a, } #endif + +#if defined(HAVE_LINUX_FIEMAP_H) + +/* + * Linux sparse interface. + * + * The FIEMAP ioctl returns an "extent" for each physical allocation + * on disk. We need to process those to generate a more compact list + * of logical file blocks. We also need to be very careful to use + * FIEMAP_FLAG_SYNC here, since there are reports that Linux sometimes + * does not report allocations for newly-written data that hasn't + * been synced to disk. + * + * It's important to return a minimal sparse file list because we want + * to not trigger sparse file extensions if we don't have to, since + * not all readers support them. + */ + +static int +setup_sparse(struct archive_read_disk *a, + struct archive_entry *entry, int fd) +{ + char buff[4096]; + struct fiemap *fm; + struct fiemap_extent *fe; + int64_t size; + int count, do_fiemap; + int initial_fd = fd; + int exit_sts = ARCHIVE_OK; + + if (archive_entry_filetype(entry) != AE_IFREG + || archive_entry_size(entry) <= 0 + || archive_entry_hardlink(entry) != NULL) + return (ARCHIVE_OK); + + if (fd < 0) { + const char *path; + + path = archive_entry_sourcepath(entry); + if (path == NULL) + path = archive_entry_pathname(entry); + fd = open(path, O_RDONLY | O_NONBLOCK); + if (fd < 0) { + archive_set_error(&a->archive, errno, + "Can't open `%s'", path); + return (ARCHIVE_FAILED); + } + } + + count = (sizeof(buff) - sizeof(*fm))/sizeof(*fe); + fm = (struct fiemap *)buff; + fm->fm_start = 0; + fm->fm_length = ~0ULL;; + fm->fm_flags = FIEMAP_FLAG_SYNC; + fm->fm_extent_count = count; + do_fiemap = 1; + size = archive_entry_size(entry); + for (;;) { + int i, r; + + r = ioctl(fd, FS_IOC_FIEMAP, fm); + if (r < 0) { + /* When errno is ENOTTY, it is better we should + * return ARCHIVE_OK because an earlier version + *(<2.6.28) cannot perfom FS_IOC_FIEMAP. + * We should also check if errno is EOPNOTSUPP, + * it means "Operation not supported". */ + if (errno != ENOTTY && errno != EOPNOTSUPP) { + archive_set_error(&a->archive, errno, + "FIEMAP failed"); + exit_sts = ARCHIVE_FAILED; + } + goto exit_setup_sparse; + } + if (fm->fm_mapped_extents == 0) + break; + fe = fm->fm_extents; + for (i = 0; i < fm->fm_mapped_extents; i++, fe++) { + if (!(fe->fe_flags & FIEMAP_EXTENT_UNWRITTEN)) { + /* The fe_length of the last block does not + * adjust itself to its size files. */ + int64_t length = fe->fe_length; + if (fe->fe_logical + length > size) + length -= fe->fe_logical + length - size; + if (fe->fe_logical == 0 && length == size) { + /* This is not sparse. */ + do_fiemap = 0; + break; + } + if (length > 0) + archive_entry_sparse_add_entry(entry, + fe->fe_logical, length); + } + if (fe->fe_flags & FIEMAP_EXTENT_LAST) + do_fiemap = 0; + } + if (do_fiemap) { + fe = fm->fm_extents + fm->fm_mapped_extents -1; + fm->fm_start = fe->fe_logical + fe->fe_length; + } else + break; + } +exit_setup_sparse: + if (initial_fd != fd) + close(fd); + return (exit_sts); +} + +#elif defined(SEEK_HOLE) && defined(SEEK_DATA) && defined(_PC_MIN_HOLE_SIZE) + +/* + * FreeBSD and Solaris sparse interface. + */ + +static int +setup_sparse(struct archive_read_disk *a, + struct archive_entry *entry, int fd) +{ + int64_t size; + int initial_fd = fd; + off_t initial_off; /* FreeBSD/Solaris only, so off_t okay here */ + off_t off_s, off_e; /* FreeBSD/Solaris only, so off_t okay here */ + int exit_sts = ARCHIVE_OK; + + if (archive_entry_filetype(entry) != AE_IFREG + || archive_entry_size(entry) <= 0 + || archive_entry_hardlink(entry) != NULL) + return (ARCHIVE_OK); + + /* Does filesystem support the reporting of hole ? */ + if (fd >= 0) { + if (fpathconf(fd, _PC_MIN_HOLE_SIZE) <= 0) + return (ARCHIVE_OK); + initial_off = lseek(fd, 0, SEEK_CUR); + if (initial_off != 0) + lseek(fd, 0, SEEK_SET); + } else { + const char *path; + + path = archive_entry_sourcepath(entry); + if (path == NULL) + path = archive_entry_pathname(entry); + if (pathconf(path, _PC_MIN_HOLE_SIZE) <= 0) + return (ARCHIVE_OK); + fd = open(path, O_RDONLY | O_NONBLOCK); + if (fd < 0) { + archive_set_error(&a->archive, errno, + "Can't open `%s'", path); + return (ARCHIVE_FAILED); + } + initial_off = 0; + } + + off_s = 0; + size = archive_entry_size(entry); + while (off_s < size) { + off_s = lseek(fd, off_s, SEEK_DATA); + if (off_s == (off_t)-1) { + if (errno == ENXIO) + break;/* no more hole */ + archive_set_error(&a->archive, errno, + "lseek(SEEK_HOLE) failed"); + exit_sts = ARCHIVE_FAILED; + goto exit_setup_sparse; + } + off_e = lseek(fd, off_s, SEEK_HOLE); + if (off_s == (off_t)-1) { + if (errno == ENXIO) { + off_e = lseek(fd, 0, SEEK_END); + if (off_e != (off_t)-1) + break;/* no more data */ + } + archive_set_error(&a->archive, errno, + "lseek(SEEK_DATA) failed"); + exit_sts = ARCHIVE_FAILED; + goto exit_setup_sparse; + } + if (off_s == 0 && off_e == size) + break;/* This is not spase. */ + archive_entry_sparse_add_entry(entry, off_s, + off_e - off_s); + off_s = off_e; + } +exit_setup_sparse: + if (initial_fd != fd) + close(fd); + else + lseek(fd, initial_off, SEEK_SET); + return (exit_sts); +} + +#else + +/* + * Generic (stub) sparse support. + */ +static int +setup_sparse(struct archive_read_disk *a, + struct archive_entry *entry, int fd) +{ + (void)a; /* UNUSED */ + (void)entry; /* UNUSED */ + (void)fd; /* UNUSED */ + return (ARCHIVE_OK); +} + +#endif + +#endif /* !defined(_WIN32) || defined(__CYGWIN__) */ + |
