/*
* Test whether current entry is a dir or link to a dir.
*/
int
tree_current_is_dir(struct tree *t)
{
const struct stat *st;
/*
* If we already have lstat() info, then try some
* cheap tests to determine if this is a dir.
*/
if (t->flags & hasLstat) {
/* If lstat() says it's a dir, it must be a dir. */
if (S_ISDIR(tree_current_lstat(t)->st_mode))
return 1;
/* Not a dir; might be a link to a dir. */
/* If it's not a link, then it's not a link to a dir. */
if (!S_ISLNK(tree_current_lstat(t)->st_mode))
return 0;
/*
* It's a link, but we don't know what it's a link to,
* so we'll have to use stat().
*/
}
st = tree_current_stat(t);
/* If we can't stat it, it's not a dir. */
if (st == NULL)
return 0;
/* Use the definitive test. Hopefully this is cached. */
return (S_ISDIR(st->st_mode));
}
/*
* Test whether current entry is a physical directory. Usually, we
* already have at least one of stat() or lstat() in memory, so we
* use tricks to try to avoid an extra trip to the disk.
*/
int
tree_current_is_physical_dir(struct tree *t)
{
const struct stat *st;
/*
* If stat() says it isn't a dir, then it's not a dir.
* If stat() data is cached, this check is free, so do it first.
*/
if ((t->flags & hasStat)
&& (!S_ISDIR(tree_current_stat(t)->st_mode)))
return 0;
/*
* Either stat() said it was a dir (in which case, we have
* to determine whether it's really a link to a dir) or
* stat() info wasn't available. So we use lstat(), which
* hopefully is already cached.
*/
st = tree_current_lstat(t);
/* If we can't stat it, it's not a dir. */
if (st == NULL)
return 0;
/* Use the definitive test. Hopefully this is cached. */
return (S_ISDIR(st->st_mode));
}
int main(int argc, char **argv)
{
size_t max_path_len = 0;
int max_depth = 0;
system("pwd");
while (*++argv) {
struct tree *t = tree_open(*argv);
while (tree_next(t)) {
size_t path_len = tree_current_pathlen(t);
int depth = tree_current_depth(t);
if (path_len > max_path_len)
max_path_len = path_len;
if (depth > max_depth)
max_depth = depth;
printf("%s\n", tree_current_path(t));
if (S_ISDIR(tree_current_lstat(t)->st_mode))
tree_descend(t); /* Descend into every dir. */
}
tree_close(t);
printf("Max path length: %d\n", max_path_len);
printf("Max depth: %d\n", max_depth);
printf("Final open count: %d\n", t->openCount);
printf("Max open count: %d\n", t->maxOpenCount);
fflush(stdout);
system("pwd");
}
return (0);
}
/*
* Test whether current entry is a symbolic link.
*/
int
tree_current_is_physical_link(struct tree *t)
{
const struct stat *st = tree_current_lstat(t);
if (st == NULL)
return 0;
return (S_ISLNK(st->st_mode));
}
/*
* Write tree to the archive. If pathname is a symbolic link it will be
* followed. Other symbolic links are stored as such to the archive.
*/
static int
shar_write_tree(struct archive *a, const char *pathname)
{
struct tree *t;
const struct stat *lst, *st;
int error = 0;
int tree_ret;
int first;
assert(a != NULL);
assert(pathname != NULL);
t = tree_open(pathname);
for (first = 1; (tree_ret = tree_next(t)); first = 0) {
if (tree_ret == TREE_ERROR_DIR) {
warnx("%s: %s", tree_current_path(t),
strerror(tree_errno(t)));
error = 1;
continue;
} else if (tree_ret != TREE_REGULAR)
continue;
if ((lst = tree_current_lstat(t)) == NULL) {
warn("%s", tree_current_path(t));
error = 1;
continue;
}
/*
* If the symlink was given on command line then
* follow it rather than write it as symlink.
*/
if (first && S_ISLNK(lst->st_mode)) {
if ((st = tree_current_stat(t)) == NULL) {
warn("%s", tree_current_path(t));
error = 1;
continue;
}
} else
st = lst;
if (shar_write_entry(a, tree_current_path(t),
tree_current_access_path(t), st) != ARCHIVE_OK)
error = 1;
tree_descend(t);
}
tree_close(t);
return ((error != 0) ? ARCHIVE_WARN : ARCHIVE_OK);
}
/*
* Called by the client to mark the directory just returned from
* tree_next() as needing to be visited.
*/
void
tree_descend(struct tree *t)
{
const struct stat *s = tree_current_lstat(t);
if (S_ISDIR(s->st_mode)) {
tree_add(t, t->basename);
t->stack->flags |= isDir;
}
if (S_ISLNK(s->st_mode) && S_ISDIR(tree_current_stat(t)->st_mode)) {
tree_add(t, t->basename);
t->stack->flags |= isDirLink;
}
}
/*
* Add the file or dir hierarchy named by 'path' to the archive
*/
static void
write_hierarchy(struct bsdtar *bsdtar, struct archive *a, const char *path)
{
struct archive_entry *entry = NULL, *spare_entry = NULL;
struct tree *tree;
char symlink_mode = bsdtar->symlink_mode;
dev_t first_dev = 0;
int dev_recorded = 0;
int tree_ret;
tree = tree_open(path);
if (!tree) {
lafe_warnc(errno, "%s: Cannot open", path);
bsdtar->return_value = 1;
return;
}
while ((tree_ret = tree_next(tree)) != 0) {
int r;
const char *name = tree_current_path(tree);
const struct stat *st = NULL; /* info to use for this entry */
const struct stat *lst = NULL; /* lstat() information */
int descend;
if (tree_ret == TREE_ERROR_FATAL)
lafe_errc(1, tree_errno(tree),
"%s: Unable to continue traversing directory tree",
name);
if (tree_ret == TREE_ERROR_DIR) {
lafe_warnc(errno,
"%s: Couldn't visit directory", name);
bsdtar->return_value = 1;
}
if (tree_ret != TREE_REGULAR)
continue;
/*
* If this file/dir is excluded by a filename
* pattern, skip it.
*/
if (lafe_excluded(bsdtar->matching, name))
continue;
/*
* Get lstat() info from the tree library.
*/
lst = tree_current_lstat(tree);
if (lst == NULL) {
/* Couldn't lstat(); must not exist. */
lafe_warnc(errno, "%s: Cannot stat", name);
/* Return error if files disappear during traverse. */
bsdtar->return_value = 1;
continue;
}
/*
* Distinguish 'L'/'P'/'H' symlink following.
*/
switch(symlink_mode) {
case 'H':
/* 'H': After the first item, rest like 'P'. */
symlink_mode = 'P';
/* 'H': First item (from command line) like 'L'. */
/* FALLTHROUGH */
case 'L':
/* 'L': Do descend through a symlink to dir. */
descend = tree_current_is_dir(tree);
/* 'L': Follow symlinks to files. */
archive_read_disk_set_symlink_logical(bsdtar->diskreader);
/* 'L': Archive symlinks as targets, if we can. */
st = tree_current_stat(tree);
if (st != NULL)
break;
/* If stat fails, we have a broken symlink;
* in that case, don't follow the link. */
/* FALLTHROUGH */
default:
/* 'P': Don't descend through a symlink to dir. */
descend = tree_current_is_physical_dir(tree);
/* 'P': Don't follow symlinks to files. */
archive_read_disk_set_symlink_physical(bsdtar->diskreader);
/* 'P': Archive symlinks as symlinks. */
st = lst;
break;
}
if (bsdtar->option_no_subdirs)
descend = 0;
/*
* Are we about to cross to a new filesystem?
*/
if (!dev_recorded) {
/* This is the initial file system. */
first_dev = lst->st_dev;
dev_recorded = 1;
} else if (lst->st_dev == first_dev) {
/* The starting file system is always acceptable. */
} else if (descend == 0) {
/* We're not descending, so no need to check. */
} else if (bsdtar->option_dont_traverse_mounts) {
descend = 0;
} else {
/* We're prepared to cross a mount point. */
/* XXX TODO: check whether this filesystem is
* synthetic and/or local. Add a new
* --local-only option to skip non-local
* filesystems. Skip synthetic filesystems
* regardless.
*
* The results should be cached, since
* tree.c doesn't usually visit a directory
* and the directory contents together. A simple
* move-to-front list should perform quite well.
*
* This is going to be heavily OS dependent:
* FreeBSD's statfs() in conjunction with getvfsbyname()
* provides all of this; NetBSD's statvfs() does
* most of it; other systems will vary.
*/
}
/*
* In -u mode, check that the file is newer than what's
* already in the archive; in all modes, obey --newerXXX flags.
*/
if (!new_enough(bsdtar, name, st)) {
if (!descend)
continue;
if (bsdtar->option_interactive &&
!yes("add '%s'", name))
continue;
tree_descend(tree);
continue;
}
archive_entry_free(entry);
entry = archive_entry_new();
archive_entry_set_pathname(entry, name);
archive_entry_copy_sourcepath(entry,
tree_current_access_path(tree));
/* Populate the archive_entry with metadata from the disk. */
/* XXX TODO: Arrange to open a regular file before
* calling this so we can pass in an fd and shorten
* the race to query metadata. The linkify dance
* makes this more complex than it might sound. */
#if defined(_WIN32) && !defined(__CYGWIN__)
/* TODO: tree.c uses stat(), which is badly broken
* on Windows. To fix this, we should
* deprecate tree_current_stat() and provide a new
* call tree_populate_entry(t, entry). This call
* would use stat() internally on POSIX and
* GetInfoByFileHandle() internally on Windows.
* This would be another step towards a tree-walker
* that can be integrated deep into libarchive.
* For now, just set st to NULL on Windows;
* archive_read_disk_entry_from_file() should
* be smart enough to use platform-appropriate
* ways to probe file information.
*/
st = NULL;
#endif
r = archive_read_disk_entry_from_file(bsdtar->diskreader,
entry, -1, st);
if (bsdtar->uid >= 0) {
archive_entry_set_uid(entry, bsdtar->uid);
if (!bsdtar->uname)
archive_entry_set_uname(entry,
archive_read_disk_uname(bsdtar->diskreader,
bsdtar->uid));
}
if (bsdtar->gid >= 0) {
archive_entry_set_gid(entry, bsdtar->gid);
if (!bsdtar->gname)
archive_entry_set_gname(entry,
archive_read_disk_gname(bsdtar->diskreader,
bsdtar->gid));
}
if (bsdtar->uname)
archive_entry_set_uname(entry, bsdtar->uname);
if (bsdtar->gname)
archive_entry_set_gname(entry, bsdtar->gname);
if (r != ARCHIVE_OK)
lafe_warnc(archive_errno(bsdtar->diskreader),
"%s", archive_error_string(bsdtar->diskreader));
if (r < ARCHIVE_WARN)
continue;
/* XXX TODO: Just use flag data from entry; avoid the
* duplicate check here. */
/*
* If this file/dir is flagged "nodump" and we're
* honoring such flags, skip this file/dir.
*/
#if defined(HAVE_STRUCT_STAT_ST_FLAGS) && defined(UF_NODUMP)
/* BSD systems store flags in struct stat */
if (bsdtar->option_honor_nodump &&
(lst->st_flags & UF_NODUMP))
continue;
#endif
#if defined(EXT2_IOC_GETFLAGS) && defined(EXT2_NODUMP_FL)
/* Linux uses ioctl to read flags. */
if (bsdtar->option_honor_nodump) {
int fd = open(name, O_RDONLY | O_NONBLOCK | O_BINARY);
if (fd >= 0) {
unsigned long fflags;
int r = ioctl(fd, EXT2_IOC_GETFLAGS, &fflags);
close(fd);
if (r >= 0 && (fflags & EXT2_NODUMP_FL))
continue;
}
}
#endif
#ifdef __APPLE__
if (bsdtar->enable_copyfile) {
/* If we're using copyfile(), ignore "._XXX" files. */
const char *bname = strrchr(name, '/');
if (bname == NULL)
bname = name;
else
++bname;
if (bname[0] == '.' && bname[1] == '_')
continue;
} else {
/* If not, drop the copyfile() data. */
archive_entry_copy_mac_metadata(entry, NULL, 0);
}
#endif
/*
* If the user vetoes this file/directory, skip it.
* We want this to be fairly late; if some other
* check would veto this file, we shouldn't bother
* the user with it.
*/
if (bsdtar->option_interactive &&
!yes("add '%s'", name))
continue;
if (descend)
tree_descend(tree);
/*
* Rewrite the pathname to be archived. If rewrite
* fails, skip the entry.
*/
if (edit_pathname(bsdtar, entry))
continue;
/* Display entry as we process it.
* This format is required by SUSv2. */
if (bsdtar->verbose)
safe_fprintf(stderr, "a %s",
archive_entry_pathname(entry));
/* Non-regular files get archived with zero size. */
if (archive_entry_filetype(entry) != AE_IFREG)
archive_entry_set_size(entry, 0);
archive_entry_linkify(bsdtar->resolver, &entry, &spare_entry);
while (entry != NULL) {
write_file(bsdtar, a, entry);
archive_entry_free(entry);
entry = spare_entry;
spare_entry = NULL;
}
if (bsdtar->verbose)
fprintf(stderr, "\n");
}
archive_entry_free(entry);
tree_close(tree);
}
/*
* Add the file or dir hierarchy named by 'path' to the archive
*/
static void
write_hierarchy(struct bsdtar *bsdtar, struct archive *a, const char *path)
{
struct archive_entry *entry = NULL, *spare_entry = NULL;
struct tree *tree;
char symlink_mode = bsdtar->symlink_mode;
dev_t first_dev = 0;
int dev_recorded = 0;
int tree_ret;
dev_t last_dev = 0;
char * fstype;
tree = tree_open(path);
if (!tree) {
bsdtar_warnc(bsdtar, errno, "%s: Cannot open", path);
bsdtar->return_value = 1;
return;
}
while ((tree_ret = tree_next(tree))) {
int r;
const char *name = tree_current_path(tree);
const struct stat *st = NULL; /* info to use for this entry */
const struct stat *lst = NULL; /* lstat() information */
int descend;
if (truncate_archive(bsdtar))
break;
if (checkpoint_archive(bsdtar, 0))
exit(1);
disk_pause(bsdtar);
if (network_select(0))
exit(1);
if (tree_ret == TREE_ERROR_FATAL)
bsdtar_errc(bsdtar, 1, tree_errno(tree),
"%s: Unable to continue traversing directory tree",
name);
if (tree_ret == TREE_ERROR_DIR) {
bsdtar_warnc(bsdtar, errno,
"%s: Couldn't visit directory", name);
bsdtar->return_value = 1;
}
if (tree_ret != TREE_REGULAR)
continue;
/*
* If this file/dir is excluded by a filename
* pattern, skip it.
*/
if (excluded(bsdtar, name))
continue;
/*
* Get lstat() info from the tree library.
*/
lst = tree_current_lstat(tree);
if (lst == NULL) {
/* Couldn't lstat(); must not exist. */
bsdtar_warnc(bsdtar, errno, "%s: Cannot stat", name);
/* Return error if files disappear during traverse. */
bsdtar->return_value = 1;
continue;
}
/*
* Distinguish 'L'/'P'/'H' symlink following.
*/
switch(symlink_mode) {
case 'H':
/* 'H': After the first item, rest like 'P'. */
symlink_mode = 'P';
/* 'H': First item (from command line) like 'L'. */
/* FALLTHROUGH */
case 'L':
/* 'L': Do descend through a symlink to dir. */
descend = tree_current_is_dir(tree);
/* 'L': Follow symlinks to files. */
archive_read_disk_set_symlink_logical(bsdtar->diskreader);
/* 'L': Archive symlinks as targets, if we can. */
st = tree_current_stat(tree);
if (st != NULL)
break;
/* If stat fails, we have a broken symlink;
* in that case, don't follow the link. */
/* FALLTHROUGH */
default:
/* 'P': Don't descend through a symlink to dir. */
descend = tree_current_is_physical_dir(tree);
/* 'P': Don't follow symlinks to files. */
archive_read_disk_set_symlink_physical(bsdtar->diskreader);
/* 'P': Archive symlinks as symlinks. */
st = lst;
break;
}
if (bsdtar->option_no_subdirs)
descend = 0;
/*
* If user has asked us not to cross mount points,
* then don't descend into a dir on a different
* device.
*/
if (!dev_recorded) {
last_dev = first_dev = lst->st_dev;
dev_recorded = 1;
}
if (bsdtar->option_dont_traverse_mounts) {
if (lst->st_dev != first_dev)
descend = 0;
}
/*
* If the user did not specify --insane-filesystems, do not
* cross into a new filesystem which is known to be synthetic.
* Note that we will archive synthetic filesystems if we are
* explicitly told to do so.
*/
if ((bsdtar->option_insane_filesystems == 0) &&
(descend != 0) &&
(lst->st_dev != last_dev)) {
fstype = getfstype(tree_current_access_path(tree));
if (fstype == NULL)
bsdtar_errc(bsdtar, 1, errno,
"%s: Error getting filesystem type",
name);
if (getfstype_issynthetic(fstype)) {
if (!bsdtar->option_quiet)
bsdtar_warnc(bsdtar, 0,
"Not descending into filesystem of type %s: %s",
fstype, name);
descend = 0;
} else {
/* This device is ok to archive. */
last_dev = lst->st_dev;
}
free(fstype);
}
/*
* In -u mode, check that the file is newer than what's
* already in the archive; in all modes, obey --newerXXX flags.
*/
if (!new_enough(bsdtar, name, st)) {
if (!descend)
continue;
if (bsdtar->option_interactive &&
!yes("add '%s'", name))
continue;
tree_descend(tree);
continue;
}
archive_entry_free(entry);
entry = archive_entry_new();
archive_entry_set_pathname(entry, name);
archive_entry_copy_sourcepath(entry,
tree_current_access_path(tree));
/* Populate the archive_entry with metadata from the disk. */
/* XXX TODO: Arrange to open a regular file before
* calling this so we can pass in an fd and shorten
* the race to query metadata. The linkify dance
* makes this more complex than it might sound. */
r = archive_read_disk_entry_from_file(bsdtar->diskreader,
entry, -1, st);
if (r != ARCHIVE_OK)
bsdtar_warnc(bsdtar, archive_errno(bsdtar->diskreader),
"%s", archive_error_string(bsdtar->diskreader));
if (r < ARCHIVE_WARN)
continue;
/* XXX TODO: Just use flag data from entry; avoid the
* duplicate check here. */
/*
* If this file/dir is flagged "nodump" and we're
* honoring such flags, skip this file/dir.
*/
#if defined(HAVE_STRUCT_STAT_ST_FLAGS) && defined(UF_NODUMP)
/* BSD systems store flags in struct stat */
if (bsdtar->option_honor_nodump &&
(lst->st_flags & UF_NODUMP))
continue;
#endif
#if defined(EXT2_NODUMP_FL)
/* Linux uses ioctl to read flags. */
if (bsdtar->option_honor_nodump) {
unsigned long fflags, dummy;
archive_entry_fflags(entry, &fflags, &dummy);
if (fflags & EXT2_NODUMP_FL)
continue;
}
#endif
/*
* Don't back up the cache directory or any files inside it.
*/
if ((lst->st_ino == bsdtar->cachedir_ino) &&
(lst->st_dev == bsdtar->cachedir_dev)) {
if (!bsdtar->option_quiet)
bsdtar_warnc(bsdtar, 0,
"Not adding cache directory to archive: %s",
name);
continue;
}
/*
* If the user vetoes this file/directory, skip it.
* We want this to be fairly late; if some other
* check would veto this file, we shouldn't bother
* the user with it.
*/
if (bsdtar->option_interactive &&
!yes("add '%s'", name))
continue;
/* Note: if user vetoes, we won't descend. */
if (descend)
tree_descend(tree);
/*
* Rewrite the pathname to be archived. If rewrite
* fails, skip the entry.
*/
if (edit_pathname(bsdtar, entry))
continue;
/*
* If this is a socket, skip the entry: POSIX requires that
* pax(1) emit a "diagnostic message" (i.e., warning) that
* sockets cannot be archived, but this can make backups of
* running systems very noisy.
*/
if (S_ISSOCK(st->st_mode))
continue;
/* Display entry as we process it.
* This format is required by SUSv2. */
if (bsdtar->verbose)
safe_fprintf(stderr, "a %s",
archive_entry_pathname(entry));
/*
* If the user hasn't specifically asked to have the access
* time stored, zero it. At the moment this usually only
* matters for files which have flags set, since the "posix
* restricted" format doesn't store access times for most
* other files.
*/
if (bsdtar->option_store_atime == 0)
archive_entry_set_atime(entry, 0, 0);
/* Non-regular files get archived with zero size. */
if (!S_ISREG(st->st_mode))
archive_entry_set_size(entry, 0);
/* Record what we're doing, for SIGINFO / SIGUSR1. */
siginfo_setinfo(bsdtar, "adding",
archive_entry_pathname(entry), archive_entry_size(entry));
archive_entry_linkify(bsdtar->resolver, &entry, &spare_entry);
/* Handle SIGINFO / SIGUSR1 request if one was made. */
siginfo_printinfo(bsdtar, 0);
while (entry != NULL) {
write_entry_backend(bsdtar, a, entry, st,
tree_current_realpath(tree));
archive_entry_free(entry);
entry = spare_entry;
spare_entry = NULL;
}
if (bsdtar->verbose)
fprintf(stderr, "\n");
}
archive_entry_free(entry);
if (tree_close(tree))
bsdtar_errc(bsdtar, 1, 0, "Error traversing directory tree");
}
/*
* Add the file or dir hierarchy named by 'path' to the archive
*/
static void
write_hierarchy(struct bsdtar *bsdtar, struct archive *a, const char *path)
{
struct archive_entry *entry = NULL, *spare_entry = NULL;
struct tree *tree;
char symlink_mode = bsdtar->symlink_mode;
dev_t first_dev = 0;
int dev_recorded = 0;
int tree_ret;
tree = tree_open(path);
if (!tree) {
bsdtar_warnc(bsdtar, errno, "%s: Cannot open", path);
bsdtar->return_value = 1;
return;
}
while ((tree_ret = tree_next(tree))) {
int r;
const char *name = tree_current_path(tree);
const struct stat *st = NULL; /* info to use for this entry */
const struct stat *lst = NULL; /* lstat() information */
int descend;
if (tree_ret == TREE_ERROR_FATAL)
bsdtar_errc(bsdtar, 1, tree_errno(tree),
"%s: Unable to continue traversing directory tree",
name);
if (tree_ret == TREE_ERROR_DIR) {
bsdtar_warnc(bsdtar, errno,
"%s: Couldn't visit directory", name);
bsdtar->return_value = 1;
}
if (tree_ret != TREE_REGULAR)
continue;
/*
* If this file/dir is excluded by a filename
* pattern, skip it.
*/
if (excluded(bsdtar, name))
continue;
/*
* Get lstat() info from the tree library.
*/
lst = tree_current_lstat(tree);
if (lst == NULL) {
/* Couldn't lstat(); must not exist. */
bsdtar_warnc(bsdtar, errno, "%s: Cannot stat", name);
/* Return error if files disappear during traverse. */
bsdtar->return_value = 1;
continue;
}
/*
* Distinguish 'L'/'P'/'H' symlink following.
*/
switch(symlink_mode) {
case 'H':
/* 'H': After the first item, rest like 'P'. */
symlink_mode = 'P';
/* 'H': First item (from command line) like 'L'. */
/* FALLTHROUGH */
case 'L':
/* 'L': Do descend through a symlink to dir. */
descend = tree_current_is_dir(tree);
/* 'L': Follow symlinks to files. */
archive_read_disk_set_symlink_logical(bsdtar->diskreader);
/* 'L': Archive symlinks as targets, if we can. */
st = tree_current_stat(tree);
if (st != NULL)
break;
/* If stat fails, we have a broken symlink;
* in that case, don't follow the link. */
/* FALLTHROUGH */
default:
/* 'P': Don't descend through a symlink to dir. */
descend = tree_current_is_physical_dir(tree);
/* 'P': Don't follow symlinks to files. */
archive_read_disk_set_symlink_physical(bsdtar->diskreader);
/* 'P': Archive symlinks as symlinks. */
st = lst;
break;
}
/*
* If user has asked us not to cross mount points,
* then don't descend into into a dir on a different
* device.
*/
if (!dev_recorded) {
first_dev = lst->st_dev;
dev_recorded = 1;
}
if (bsdtar->option_dont_traverse_mounts) {
if (lst->st_dev != first_dev)
descend = 0;
}
/*
* In -u mode, check that the file is newer than what's
* already in the archive; in all modes, obey --newerXXX flags.
*/
if (!new_enough(bsdtar, name, st))
continue;
archive_entry_free(entry);
entry = archive_entry_new();
archive_entry_set_pathname(entry, name);
archive_entry_copy_sourcepath(entry,
tree_current_access_path(tree));
/* Populate the archive_entry with metadata from the disk. */
/* XXX TODO: Arrange to open a regular file before
* calling this so we can pass in an fd and shorten
* the race to query metadata. The linkify dance
* makes this more complex than it might sound. */
r = archive_read_disk_entry_from_file(bsdtar->diskreader,
entry, -1, st);
if (r != ARCHIVE_OK)
bsdtar_warnc(bsdtar, archive_errno(bsdtar->diskreader),
archive_error_string(bsdtar->diskreader));
if (r < ARCHIVE_WARN)
continue;
/* XXX TODO: Just use flag data from entry; avoid the
* duplicate check here. */
/*
* If this file/dir is flagged "nodump" and we're
* honoring such flags, skip this file/dir.
*/
#ifdef HAVE_STRUCT_STAT_ST_FLAGS
/* BSD systems store flags in struct stat */
if (bsdtar->option_honor_nodump &&
(lst->st_flags & UF_NODUMP))
continue;
#endif
#if defined(EXT2_IOC_GETFLAGS) && defined(EXT2_NODUMP_FL)
/* Linux uses ioctl to read flags. */
if (bsdtar->option_honor_nodump) {
int fd = open(name, O_RDONLY | O_NONBLOCK);
if (fd >= 0) {
unsigned long fflags;
int r = ioctl(fd, EXT2_IOC_GETFLAGS, &fflags);
close(fd);
if (r >= 0 && (fflags & EXT2_NODUMP_FL))
continue;
}
}
#endif
/*
* If the user vetoes this file/directory, skip it.
* We want this to be fairly late; if some other
* check would veto this file, we shouldn't bother
* the user with it.
*/
if (bsdtar->option_interactive &&
!yes("add '%s'", name))
continue;
/* Note: if user vetoes, we won't descend. */
if (descend && !bsdtar->option_no_subdirs)
tree_descend(tree);
/*
* Rewrite the pathname to be archived. If rewrite
* fails, skip the entry.
*/
if (edit_pathname(bsdtar, entry))
continue;
/* Display entry as we process it.
* This format is required by SUSv2. */
if (bsdtar->verbose)
safe_fprintf(stderr, "a %s",
archive_entry_pathname(entry));
/* Non-regular files get archived with zero size. */
if (!S_ISREG(st->st_mode))
archive_entry_set_size(entry, 0);
/* Record what we're doing, for SIGINFO / SIGUSR1. */
siginfo_setinfo(bsdtar, "adding",
archive_entry_pathname(entry), archive_entry_size(entry));
archive_entry_linkify(bsdtar->resolver, &entry, &spare_entry);
/* Handle SIGINFO / SIGUSR1 request if one was made. */
siginfo_printinfo(bsdtar, 0);
while (entry != NULL) {
write_entry_backend(bsdtar, a, entry);
archive_entry_free(entry);
entry = spare_entry;
spare_entry = NULL;
}
if (bsdtar->verbose)
fprintf(stderr, "\n");
}
archive_entry_free(entry);
tree_close(tree);
}