static void
find(char *arg)
{
char * arglist[2];
FTS *p;
FTSENT *ent;
state.starting_path_length = strlen(arg);
inside_dir(AT_FDCWD);
arglist[0] = arg;
arglist[1] = NULL;
switch (options.symlink_handling)
{
case SYMLINK_ALWAYS_DEREF:
ftsoptions |= FTS_COMFOLLOW|FTS_LOGICAL;
break;
case SYMLINK_DEREF_ARGSONLY:
ftsoptions |= FTS_COMFOLLOW|FTS_PHYSICAL;
break;
case SYMLINK_NEVER_DEREF:
ftsoptions |= FTS_PHYSICAL;
break;
}
if (options.stay_on_filesystem)
ftsoptions |= FTS_XDEV;
p = fts_open(arglist, ftsoptions, NULL);
if (NULL == p)
{
error (0, errno, _("cannot search %s"),
safely_quote_err_filename(0, arg));
}
else
{
while ( (ent=fts_read(p)) != NULL )
{
state.have_stat = false;
state.have_type = false;
state.type = 0;
consider_visiting(p, ent);
}
fts_close(p);
p = NULL;
}
}
static bool
find (char *arg)
{
char * arglist[2];
FTS *p;
FTSENT *ent;
state.starting_path_length = strlen (arg);
inside_dir (AT_FDCWD);
arglist[0] = arg;
arglist[1] = NULL;
switch (options.symlink_handling)
{
case SYMLINK_ALWAYS_DEREF:
ftsoptions |= FTS_COMFOLLOW|FTS_LOGICAL;
break;
case SYMLINK_DEREF_ARGSONLY:
ftsoptions |= FTS_COMFOLLOW|FTS_PHYSICAL;
break;
case SYMLINK_NEVER_DEREF:
ftsoptions |= FTS_PHYSICAL;
break;
}
if (options.stay_on_filesystem)
ftsoptions |= FTS_XDEV;
p = fts_open (arglist, ftsoptions, NULL);
if (NULL == p)
{
error (0, errno, _("cannot search %s"),
safely_quote_err_filename (0, arg));
error_severity (EXIT_FAILURE);
}
else
{
int level = INT_MIN;
while ( (errno=0, ent=fts_read (p)) != NULL )
{
if (state.execdirs_outstanding)
{
/* If we changed level, perform any outstanding
* execdirs. If we see a sequence of directory entries
* like this: fffdfffdfff, we could build a command line
* of 9 files, but this simple-minded implementation
* builds a command line for only 3 files at a time
* (since fts descends into the directories).
*/
if ((int)ent->fts_level != level)
{
show_outstanding_execdirs (stderr);
complete_pending_execdirs ();
}
}
level = (int)ent->fts_level;
state.already_issued_stat_error_msg = false;
state.have_stat = false;
state.have_type = !!ent->fts_statp->st_mode;
state.type = state.have_type ? ent->fts_statp->st_mode : 0;
consider_visiting (p, ent);
}
/* fts_read returned NULL; distinguish between "finished" and "error". */
if (errno)
{
error (0, errno,
"failed to read file names from file system at or below %s",
safely_quote_err_filename (0, arg));
error_severity (EXIT_FAILURE);
return false;
}
if (0 != fts_close (p))
{
/* Here we break the abstraction of fts_close a bit, because we
* are going to skip the rest of the start points, and return with
* nonzero exit status. Hence we need to issue a diagnostic on
* stderr. */
error (0, errno,
_("failed to restore working directory after searching %s"),
arg);
error_severity (EXIT_FAILURE);
return false;
}
p = NULL;
}
return true;
}
static void
consider_visiting (FTS *p, FTSENT *ent)
{
struct stat statbuf;
mode_t mode;
int ignore, isdir;
if (options.debug_options & DebugSearch)
fprintf (stderr,
"consider_visiting (early): %s: "
"fts_info=%-6s, fts_level=%2d, prev_depth=%d "
"fts_path=%s, fts_accpath=%s\n",
quotearg_n_style (0, options.err_quoting_style, ent->fts_path),
get_fts_info_name (ent->fts_info),
(int)ent->fts_level, prev_depth,
quotearg_n_style (1, options.err_quoting_style, ent->fts_path),
quotearg_n_style (2, options.err_quoting_style, ent->fts_accpath));
if (ent->fts_info == FTS_DP)
{
left_dir ();
}
else if (ent->fts_level > prev_depth || ent->fts_level==0)
{
left_dir ();
}
inside_dir (p->fts_cwd_fd);
prev_depth = ent->fts_level;
statbuf.st_ino = ent->fts_statp->st_ino;
/* Cope with various error conditions. */
if (ent->fts_info == FTS_ERR
|| ent->fts_info == FTS_DNR)
{
nonfatal_target_file_error (ent->fts_errno, ent->fts_path);
return;
}
else if (ent->fts_info == FTS_DC)
{
issue_loop_warning (ent);
error_severity (EXIT_FAILURE);
return;
}
else if (ent->fts_info == FTS_SLNONE)
{
/* fts_read() claims that ent->fts_accpath is a broken symbolic
* link. That would be fine, but if this is part of a symbolic
* link loop, we diagnose the problem and also ensure that the
* eventual return value is nonzero. Note that while the path
* we stat is local (fts_accpath), we print the full path name
* of the file (fts_path) in the error message.
*/
if (symlink_loop (ent->fts_accpath))
{
nonfatal_target_file_error (ELOOP, ent->fts_path);
return;
}
}
else if (ent->fts_info == FTS_NS)
{
if (ent->fts_level == 0)
{
/* e.g., nonexistent starting point */
nonfatal_target_file_error (ent->fts_errno, ent->fts_path);
return;
}
else
{
/* The following if statement fixes Savannah bug #19605
* (failure to diagnose a symbolic link loop)
*/
if (symlink_loop (ent->fts_accpath))
{
nonfatal_target_file_error (ELOOP, ent->fts_path);
return;
}
else
{
nonfatal_target_file_error (ent->fts_errno, ent->fts_path);
/* Continue despite the error, as file name without stat info
* might be better than not even processing the file name. This
* can lead to repeated error messages later on, though, if a
* predicate requires stat information.
*
* Not printing an error message here would be even more wrong,
* though, as this could cause the contents of a directory to be
* silently ignored, as the directory wouldn't be identified as
* such.
*/
}
}
}
/* Cope with the usual cases. */
if (ent->fts_info == FTS_NSOK
|| ent->fts_info == FTS_NS /* e.g. symlink loop */)
{
assert (!state.have_stat);
assert (ent->fts_info == FTS_NSOK || state.type == 0);
mode = state.type;
}
else
{
state.have_stat = true;
state.have_type = true;
statbuf = *(ent->fts_statp);
state.type = mode = statbuf.st_mode;
if (00000 == mode)
{
/* Savannah bug #16378. */
error (0, 0, _("WARNING: file %s appears to have mode 0000"),
quotearg_n_style (0, options.err_quoting_style, ent->fts_path));
}
}
/* update state.curdepth before calling digest_mode(), because digest_mode
* may call following_links().
*/
state.curdepth = ent->fts_level;
if (mode)
{
if (!digest_mode (&mode, ent->fts_path, ent->fts_name, &statbuf, 0))
return;
}
/* examine this item. */
ignore = 0;
isdir = S_ISDIR(mode)
|| (FTS_D == ent->fts_info)
|| (FTS_DP == ent->fts_info)
|| (FTS_DC == ent->fts_info);
if (isdir && (ent->fts_info == FTS_NSOK))
{
/* This is a directory, but fts did not stat it, so
* presumably would not be planning to search its
* children. Force a stat of the file so that the
* children can be checked.
*/
fts_set (p, ent, FTS_AGAIN);
return;
}
if (options.maxdepth >= 0)
{
if (ent->fts_level >= options.maxdepth)
{
fts_set (p, ent, FTS_SKIP); /* descend no further */
if (ent->fts_level > options.maxdepth)
ignore = 1; /* don't even look at this one */
}
}
if ( (ent->fts_info == FTS_D) && !options.do_dir_first )
{
/* this is the preorder visit, but user said -depth */
ignore = 1;
}
else if ( (ent->fts_info == FTS_DP) && options.do_dir_first )
{
/* this is the postorder visit, but user didn't say -depth */
ignore = 1;
}
else if (ent->fts_level < options.mindepth)
{
ignore = 1;
}
if (options.debug_options & DebugSearch)
fprintf (stderr,
"consider_visiting (late): %s: "
"fts_info=%-6s, isdir=%d ignore=%d have_stat=%d have_type=%d \n",
quotearg_n_style (0, options.err_quoting_style, ent->fts_path),
get_fts_info_name (ent->fts_info),
isdir, ignore, state.have_stat, state.have_type);
if (!ignore)
{
visit (p, ent, &statbuf);
}
if (ent->fts_info == FTS_DP)
{
/* we're leaving a directory. */
state.stop_at_current_level = false;
}
}
static void
consider_visiting(FTS *p, FTSENT *ent)
{
struct stat statbuf;
mode_t mode;
int ignore, isdir;
if (options.debug_options & DebugSearch)
fprintf(stderr,
"consider_visiting: fts_info=%-6s, fts_level=%2d, prev_depth=%d "
"fts_path=%s, fts_accpath=%s\n",
get_fts_info_name(ent->fts_info),
(int)ent->fts_level, prev_depth,
quotearg_n_style(0, options.err_quoting_style, ent->fts_path),
quotearg_n_style(1, options.err_quoting_style, ent->fts_accpath));
if (ent->fts_info == FTS_DP)
{
left_dir();
}
else if (ent->fts_level > prev_depth || ent->fts_level==0)
{
left_dir();
}
inside_dir(p->fts_cwd_fd);
prev_depth = ent->fts_level;
/* Cope with various error conditions. */
if (ent->fts_info == FTS_ERR
|| ent->fts_info == FTS_DNR)
{
error(0, ent->fts_errno, "%s",
safely_quote_err_filename(0, ent->fts_path));
error_severity(1);
return;
}
else if (ent->fts_info == FTS_DC)
{
issue_loop_warning(ent);
error_severity(1);
return;
}
else if (ent->fts_info == FTS_SLNONE)
{
/* fts_read() claims that ent->fts_accpath is a broken symbolic
* link. That would be fine, but if this is part of a symbolic
* link loop, we diagnose the problem and also ensure that the
* eventual return value is nonzero. Note that while the path
* we stat is local (fts_accpath), we print the full path name
* of the file (fts_path) in the error message.
*/
if (symlink_loop(ent->fts_accpath))
{
error(0, ELOOP, "%s", safely_quote_err_filename(0, ent->fts_path));
error_severity(1);
return;
}
}
else if (ent->fts_info == FTS_NS)
{
if (ent->fts_level == 0)
{
/* e.g., nonexistent starting point */
error(0, ent->fts_errno, "%s",
safely_quote_err_filename(0, ent->fts_path));
error_severity(1); /* remember problem */
return;
}
else
{
/* The following if statement fixes Savannah bug #19605
* (failure to diagnose a symbolic link loop)
*/
if (symlink_loop(ent->fts_accpath))
{
error(0, ELOOP, "%s",
safely_quote_err_filename(0, ent->fts_path));
error_severity(1);
return;
}
}
}
/* Cope with the usual cases. */
if (ent->fts_info == FTS_NSOK
|| ent->fts_info == FTS_NS /* e.g. symlink loop */)
{
assert (!state.have_stat);
assert (!state.have_type);
state.type = mode = 0;
}
else
{
state.have_stat = true;
state.have_type = true;
statbuf = *(ent->fts_statp);
state.type = mode = statbuf.st_mode;
if (00000 == mode)
{
/* Savannah bug #16378. */
error(0, 0, _("Warning: file %s appears to have mode 0000"),
quotearg_n_style(0, options.err_quoting_style, ent->fts_path));
}
}
if (mode)
{
if (!digest_mode(mode, ent->fts_path, ent->fts_name, &statbuf, 0))
return;
}
/* examine this item. */
ignore = 0;
isdir = S_ISDIR(mode)
|| (FTS_D == ent->fts_info)
|| (FTS_DP == ent->fts_info)
|| (FTS_DC == ent->fts_info);
if (isdir && (ent->fts_info == FTS_NSOK))
{
/* This is a directory, but fts did not stat it, so
* presumably would not be planning to search its
* children. Force a stat of the file so that the
* children can be checked.
*/
fts_set(p, ent, FTS_AGAIN);
return;
}
if (options.maxdepth >= 0)
{
if (ent->fts_level >= options.maxdepth)
{
fts_set(p, ent, FTS_SKIP); /* descend no further */
if (ent->fts_level > options.maxdepth)
ignore = 1; /* don't even look at this one */
}
}
if ( (ent->fts_info == FTS_D) && !options.do_dir_first )
{
/* this is the preorder visit, but user said -depth */
ignore = 1;
}
else if ( (ent->fts_info == FTS_DP) && options.do_dir_first )
{
/* this is the postorder visit, but user didn't say -depth */
ignore = 1;
}
else if (ent->fts_level < options.mindepth)
{
ignore = 1;
}
if (!ignore)
{
visit(p, ent, &statbuf);
}
/* XXX: if we allow a build-up of pending arguments for "-execdir foo {} +"
* we need to execute them in the same directory as we found the item.
* If we are trying to do "find a -execdir echo {} +", we will need to
* echo
* a while in the original working directory
* b while in a
* c while in b (just before leaving b)
*
* These restrictions are hard to satisfy while using fts(). The reason is
* that it doesn't tell us just before we leave a directory. For the moment,
* we punt and don't allow the arguments to build up.
*/
if (state.execdirs_outstanding)
{
show_outstanding_execdirs(stderr);
run_in_dir(p->fts_cwd_fd, complete_execdirs_cb, NULL);
}
if (ent->fts_info == FTS_DP)
{
/* we're leaving a directory. */
state.stop_at_current_level = false;
}
}
