/* Various processing of names.
- Copyright (C) 1988, 1992, 1994, 1996, 1997, 1998, 1999, 2000, 2001,
- 2003, 2004 Free Software Foundation, Inc.
+ Copyright 1988, 1992, 1994, 1996-2001, 2003-2007, 2009, 2013-2014
+ Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2, or (at your option) any later
+ Free Software Foundation; either version 3, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but
Public License for more details.
You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ with this program. If not, see <http://www.gnu.org/licenses/>. */
-#include "system.h"
+#include <system.h>
#include <fnmatch.h>
#include <hash.h>
#include <quotearg.h>
+#include <wordsplit.h>
+#include <argp.h>
#include "common.h"
\f
/* User and group names. */
-struct group *getgrnam ();
-struct passwd *getpwnam ();
-#if ! HAVE_DECL_GETPWUID
-struct passwd *getpwuid ();
-#endif
-#if ! HAVE_DECL_GETGRGID
-struct group *getgrgid ();
-#endif
-
/* Make sure you link with the proper libraries if you are running the
Yellow Peril (thanks for the good laugh, Ian J.!), or, euh... NIS.
This code should also be modified for non-UNIX systems to do something
if (uid != 0 && uid == cached_no_such_uid)
{
- *uname = strdup ("");
+ *uname = xstrdup ("");
return;
}
else
{
cached_no_such_uid = uid;
- *uname = strdup ("");
+ *uname = xstrdup ("");
return;
}
}
- *uname = strdup (cached_uname);
+ *uname = xstrdup (cached_uname);
}
/* Given GID, find the corresponding GNAME. */
if (gid != 0 && gid == cached_no_such_gid)
{
- *gname = strdup ("");
+ *gname = xstrdup ("");
return;
}
else
{
cached_no_such_gid = gid;
- *gname = strdup ("");
+ *gname = xstrdup ("");
return;
}
}
- *gname = strdup (cached_gname);
+ *gname = xstrdup (cached_gname);
}
/* Given UNAME, set the corresponding UID and return 1, or else, return 0. */
return 1;
}
+\f
+static struct name *
+make_name (const char *file_name)
+{
+ struct name *p = xzalloc (sizeof (*p));
+ if (!file_name)
+ file_name = "";
+ p->name = xstrdup (file_name);
+ p->length = strlen (p->name);
+ return p;
+}
+
+static void
+free_name (struct name *p)
+{
+ if (p)
+ {
+ free (p->name);
+ free (p->caname);
+ free (p);
+ }
+}
+
\f
/* Names from the command call. */
static struct name *namelist; /* first name in list, if any */
-static struct name **nametail = &namelist; /* end of name list */
-static const char **name_array; /* store an array of names */
-static int allocated_names; /* how big is the array? */
-static int names; /* how many entries does it have? */
-static int name_index; /* how many of the entries have we scanned? */
+static struct name *nametail; /* end of name list */
-/* Initialize structures. */
-void
-init_names (void)
+/* File name arguments are processed in two stages: first a
+ name element list (see below) is filled, then the names from it
+ are moved into the namelist.
+
+ This awkward process is needed only to implement --same-order option,
+ which is meant to help process large archives on machines with
+ limited memory. With this option on, namelist contains at most one
+ entry, which diminishes the memory consumption.
+
+ However, I very much doubt if we still need this -- Sergey */
+
+/* A name_list element contains entries of three types: */
+
+#define NELT_NAME 0 /* File name */
+#define NELT_CHDIR 1 /* Change directory request */
+#define NELT_FMASK 2 /* Change fnmatch options request */
+#define NELT_FILE 3 /* Read file names from that file */
+#define NELT_NOOP 4 /* No operation */
+
+struct name_elt /* A name_array element. */
+{
+ struct name_elt *next, *prev;
+ char type; /* Element type, see NELT_* constants above */
+ union
+ {
+ const char *name; /* File or directory name */
+ int matching_flags;/* fnmatch options if type == NELT_FMASK */
+ struct /* File, if type == NELT_FILE */
+ {
+ const char *name;/* File name */
+ int term; /* File name terminator in the list */
+ FILE *fp;
+ } file;
+ } v;
+};
+
+static struct name_elt *name_head; /* store a list of names */
+size_t name_count; /* how many of the entries are names? */
+
+static struct name_elt *
+name_elt_alloc (void)
+{
+ struct name_elt *elt;
+
+ elt = xmalloc (sizeof (*elt));
+ if (!name_head)
+ {
+ name_head = elt;
+ name_head->prev = name_head->next = NULL;
+ name_head->type = NELT_NOOP;
+ elt = xmalloc (sizeof (*elt));
+ }
+
+ elt->prev = name_head->prev;
+ if (name_head->prev)
+ name_head->prev->next = elt;
+ elt->next = name_head;
+ name_head->prev = elt;
+ return elt;
+}
+
+static void
+name_list_adjust (void)
+{
+ if (name_head)
+ while (name_head->prev)
+ name_head = name_head->prev;
+}
+
+static void
+name_list_advance (void)
{
- allocated_names = 10;
- name_array = xmalloc (sizeof (const char *) * allocated_names);
- names = 0;
+ struct name_elt *elt = name_head;
+ name_head = elt->next;
+ if (name_head)
+ name_head->prev = NULL;
+ free (elt);
}
-/* Add NAME at end of name_array, reallocating it as necessary. */
+/* Add to name_array the file NAME with fnmatch options MATCHING_FLAGS */
void
-name_add (const char *name)
+name_add_name (const char *name, int matching_flags)
{
- if (names == allocated_names)
+ static int prev_flags = 0; /* FIXME: Or EXCLUDE_ANCHORED? */
+ struct name_elt *ep = name_elt_alloc ();
+
+ if (prev_flags != matching_flags)
{
- allocated_names *= 2;
- name_array =
- xrealloc (name_array, sizeof (const char *) * allocated_names);
+ ep->type = NELT_FMASK;
+ ep->v.matching_flags = matching_flags;
+ prev_flags = matching_flags;
+ ep = name_elt_alloc ();
}
- name_array[names++] = name;
+ ep->type = NELT_NAME;
+ ep->v.name = name;
+ name_count++;
+}
+
+/* Add to name_array a chdir request for the directory NAME */
+void
+name_add_dir (const char *name)
+{
+ struct name_elt *ep = name_elt_alloc ();
+ ep->type = NELT_CHDIR;
+ ep->v.name = name;
+}
+
+void
+name_add_file (const char *name, int term)
+{
+ struct name_elt *ep = name_elt_alloc ();
+ ep->type = NELT_FILE;
+ ep->v.file.name = name;
+ ep->v.file.term = term;
+ ep->v.file.fp = NULL;
}
\f
/* Names from external name file. */
-static FILE *name_file; /* file to read names from */
static char *name_buffer; /* buffer to hold the current file name */
static size_t name_buffer_length; /* allocated length of name_buffer */
-/* FIXME: I should better check more closely. It seems at first glance that
- is_pattern is only used when reading a file, and ignored for all
- command line arguments. */
-
-static inline int
-is_pattern (const char *string)
-{
- return strchr (string, '*') || strchr (string, '[') || strchr (string, '?');
-}
-
/* Set up to gather file names for tar. They can either come from a
file or were saved from decoding arguments. */
void
{
name_buffer = xmalloc (NAME_FIELD_SIZE + 2);
name_buffer_length = NAME_FIELD_SIZE;
-
- if (files_from_option)
- {
- if (!strcmp (files_from_option, "-"))
- {
- request_stdin ("-T");
- name_file = stdin;
- }
- else if (name_file = fopen (files_from_option, "r"), !name_file)
- open_fatal (files_from_option);
- }
+ name_list_adjust ();
}
void
name_term (void)
{
free (name_buffer);
- free (name_array);
+}
+\f
+/* Prevent recursive inclusion of the same file */
+struct file_id_list
+{
+ struct file_id_list *next;
+ ino_t ino;
+ dev_t dev;
+ const char *from_file;
+};
+
+static struct file_id_list *file_id_list;
+
+/* Return the name of the file from which the file names and options
+ are being read.
+*/
+static const char *
+file_list_name (void)
+{
+ struct name_elt *elt;
+
+ for (elt = name_head; elt; elt = elt->next)
+ if (elt->type == NELT_FILE && elt->v.file.fp)
+ return elt->v.file.name;
+ return _("command line");
}
-/* Read the next filename from name_file and null-terminate it. Put
- it into name_buffer, reallocating and adjusting name_buffer_length
- if necessary. Return 0 at end of file, 1 otherwise. */
static int
-read_name_from_file (void)
+add_file_id (const char *filename)
{
- int character;
+ struct file_id_list *p;
+ struct stat st;
+ const char *reading_from;
+
+ if (stat (filename, &st))
+ stat_fatal (filename);
+ reading_from = file_list_name ();
+ for (p = file_id_list; p; p = p->next)
+ if (p->ino == st.st_ino && p->dev == st.st_dev)
+ {
+ int oldc = set_char_quoting (NULL, ':', 1);
+ ERROR ((0, 0,
+ _("%s: file list requested from %s already read from %s"),
+ quotearg_n (0, filename),
+ reading_from, p->from_file));
+ set_char_quoting (NULL, ':', oldc);
+ return 1;
+ }
+ p = xmalloc (sizeof *p);
+ p->next = file_id_list;
+ p->ino = st.st_ino;
+ p->dev = st.st_dev;
+ p->from_file = reading_from;
+ file_id_list = p;
+ return 0;
+}
+\f
+enum read_file_list_state /* Result of reading file name from the list file */
+ {
+ file_list_success, /* OK, name read successfully */
+ file_list_end, /* End of list file */
+ file_list_zero, /* Zero separator encountered where it should not */
+ file_list_skip /* Empty (zero-length) entry encountered, skip it */
+ };
+
+/* Read from FP a sequence of characters up to TERM and put them
+ into STK.
+ */
+static enum read_file_list_state
+read_name_from_file (struct name_elt *ent)
+{
+ int c;
size_t counter = 0;
+ FILE *fp = ent->v.file.fp;
+ int term = ent->v.file.term;
- /* FIXME: getc may be called even if character was EOF the last time here. */
-
- /* FIXME: This + 2 allocation might serve no purpose. */
-
- while (character = getc (name_file),
- character != EOF && character != filename_terminator)
+ for (c = getc (fp); c != EOF && c != term; c = getc (fp))
{
if (counter == name_buffer_length)
+ name_buffer = x2realloc (name_buffer, &name_buffer_length);
+ name_buffer[counter++] = c;
+ if (c == 0)
{
- if (name_buffer_length * 2 < name_buffer_length)
- xalloc_die ();
- name_buffer_length *= 2;
- name_buffer = xrealloc (name_buffer, name_buffer_length + 2);
+ /* We have read a zero separator. The file possibly is
+ zero-separated */
+ return file_list_zero;
}
- name_buffer[counter++] = character;
}
- if (counter == 0 && character == EOF)
- return 0;
+ if (counter == 0 && c != EOF)
+ return file_list_skip;
if (counter == name_buffer_length)
- {
- if (name_buffer_length * 2 < name_buffer_length)
- xalloc_die ();
- name_buffer_length *= 2;
- name_buffer = xrealloc (name_buffer, name_buffer_length + 2);
- }
- name_buffer[counter] = '\0';
+ name_buffer = x2realloc (name_buffer, &name_buffer_length);
+ name_buffer[counter] = 0;
- return 1;
+ return (counter == 0 && c == EOF) ? file_list_end : file_list_success;
}
-/* Get the next name from ARGV or the file of names. Result is in
- static storage and can't be relied upon across two calls.
-
- If CHANGE_DIRS is true, treat a filename of the form "-C" as
- meaning that the next filename is the name of a directory to change
- to. If filename_terminator is NUL, CHANGE_DIRS is effectively
- always false. */
-char *
-name_next (int change_dirs)
+static int
+handle_option (const char *str)
{
- const char *source;
- char *cursor;
- int chdir_flag = 0;
+ struct wordsplit ws;
+ int i;
+
+ while (*str && isspace (*str))
+ ;
+ if (*str != '-')
+ return 1;
- if (filename_terminator == '\0')
- change_dirs = 0;
+ ws.ws_offs = 1;
+ if (wordsplit (str, &ws, WRDSF_DEFFLAGS|WRDSF_DOOFFS))
+ FATAL_ERROR ((0, 0, _("cannot split string '%s': %s"),
+ str, wordsplit_strerror (&ws)));
+ ws.ws_wordv[0] = program_invocation_short_name;
+ more_options (ws.ws_wordc+ws.ws_offs, ws.ws_wordv);
+ for (i = 0; i < ws.ws_wordc+ws.ws_offs; i++)
+ ws.ws_wordv[i] = NULL;
- while (1)
- {
- /* Get a name, either from file or from saved arguments. */
+ wordsplit_free (&ws);
+ return 0;
+}
- if (name_index == names)
+static int
+read_next_name (struct name_elt *ent, struct name_elt *ret)
+{
+ if (!ent->v.file.fp)
+ {
+ if (!strcmp (ent->v.file.name, "-"))
{
- if (! name_file)
- break;
- if (! read_name_from_file ())
- break;
+ request_stdin ("-T");
+ ent->v.file.fp = stdin;
}
else
{
- size_t source_len;
- source = name_array[name_index++];
- source_len = strlen (source);
- if (name_buffer_length < source_len)
+ if (add_file_id (ent->v.file.name))
{
- do
- {
- name_buffer_length *= 2;
- if (! name_buffer_length)
- xalloc_die ();
- }
- while (name_buffer_length < source_len);
-
- free (name_buffer);
- name_buffer = xmalloc (name_buffer_length + 2);
+ name_list_advance ();
+ return 1;
}
- strcpy (name_buffer, source);
+ if ((ent->v.file.fp = fopen (ent->v.file.name, "r")) == NULL)
+ open_fatal (ent->v.file.name);
}
+ }
- /* Zap trailing slashes. */
+ while (1)
+ {
+ switch (read_name_from_file (ent))
+ {
+ case file_list_skip:
+ continue;
- cursor = name_buffer + strlen (name_buffer) - 1;
- while (cursor > name_buffer && ISSLASH (*cursor))
- *cursor-- = '\0';
+ case file_list_zero:
+ WARNOPT (WARN_FILENAME_WITH_NULS,
+ (0, 0, N_("%s: file name read contains nul character"),
+ quotearg_colon (ent->v.file.name)));
+ ent->v.file.term = 0;
+ /* fall through */
+ case file_list_success:
+ if (unquote_option)
+ unquote_string (name_buffer);
+ if (handle_option (name_buffer) == 0)
+ {
+ name_list_adjust ();
+ return 1;
+ }
+ ret->type = NELT_NAME;
+ ret->v.name = name_buffer;
+ return 0;
- if (chdir_flag)
- {
- if (chdir (name_buffer) < 0)
- chdir_fatal (name_buffer);
- chdir_flag = 0;
+ case file_list_end:
+ if (strcmp (ent->v.file.name, "-"))
+ fclose (ent->v.file.fp);
+ ent->v.file.fp = NULL;
+ name_list_advance ();
+ return 1;
}
- else if (change_dirs && strcmp (name_buffer, "-C") == 0)
- chdir_flag = 1;
- else
+ }
+}
+\f
+static void
+copy_name (struct name_elt *ep)
+{
+ const char *source;
+ size_t source_len;
+ char *cursor;
+
+ source = ep->v.name;
+ source_len = strlen (source);
+ if (name_buffer_length < source_len)
+ {
+ do
{
- unquote_string (name_buffer);
- return name_buffer;
+ name_buffer_length *= 2;
+ if (! name_buffer_length)
+ xalloc_die ();
}
+ while (name_buffer_length < source_len);
+
+ free (name_buffer);
+ name_buffer = xmalloc(name_buffer_length + 2);
}
+ strcpy (name_buffer, source);
+
+ /* Zap trailing slashes. */
+ cursor = name_buffer + strlen (name_buffer) - 1;
+ while (cursor > name_buffer && ISSLASH (*cursor))
+ *cursor-- = '\0';
+}
- /* No more names in file. */
+\f
+static int matching_flags; /* exclude_fnmatch options */
- if (name_file && chdir_flag)
- FATAL_ERROR ((0, 0, _("Missing file name after -C")));
+/* Get the next NELT_NAME element from name_array. Result is in
+ static storage and can't be relied upon across two calls.
- return 0;
+ If CHANGE_DIRS is true, treat any entries of type NELT_CHDIR as
+ the request to change to the given directory.
+
+ Entries of type NELT_FMASK cause updates of the matching_flags
+ value. */
+static struct name_elt *
+name_next_elt (int change_dirs)
+{
+ static struct name_elt entry;
+ struct name_elt *ep;
+
+ while ((ep = name_head) != NULL)
+ {
+ switch (ep->type)
+ {
+ case NELT_NOOP:
+ name_list_advance ();
+ break;
+
+ case NELT_FMASK:
+ matching_flags = ep->v.matching_flags;
+ recursion_option = matching_flags & FNM_LEADING_DIR;
+ name_list_advance ();
+ continue;
+
+ case NELT_FILE:
+ if (read_next_name (ep, &entry) == 0)
+ return &entry;
+ continue;
+
+ case NELT_CHDIR:
+ if (change_dirs)
+ {
+ chdir_do (chdir_arg (xstrdup (ep->v.name)));
+ name_list_advance ();
+ break;
+ }
+ /* fall through */
+ case NELT_NAME:
+ copy_name (ep);
+ if (unquote_option)
+ unquote_string (name_buffer);
+ entry.type = ep->type;
+ entry.v.name = name_buffer;
+ name_list_advance ();
+ return &entry;
+ }
+ }
+
+ return NULL;
}
-/* Close the name file, if any. */
-void
-name_close (void)
+const char *
+name_next (int change_dirs)
{
- if (name_file && name_file != stdin)
- if (fclose (name_file) != 0)
- close_error (name_buffer);
+ struct name_elt *nelt = name_next_elt (change_dirs);
+ return nelt ? nelt->v.name : NULL;
}
/* Gather names in a list for scanning. Could hash them later if we
name_gather (void)
{
/* Buffer able to hold a single name. */
- static struct name *buffer;
- static size_t allocated_size;
+ static struct name *buffer = NULL;
- char const *name;
+ struct name_elt *ep;
if (same_order_option)
{
static int change_dir;
- if (allocated_size == 0)
- {
- allocated_size = offsetof (struct name, name) + NAME_FIELD_SIZE + 1;
- buffer = xmalloc (allocated_size);
- /* FIXME: This memset is overkill, and ugly... */
- memset (buffer, 0, allocated_size);
- }
-
- while ((name = name_next (0)) && strcmp (name, "-C") == 0)
- {
- char const *dir = name_next (0);
- if (! dir)
- FATAL_ERROR ((0, 0, _("Missing file name after -C")));
- change_dir = chdir_arg (xstrdup (dir));
- }
+ while ((ep = name_next_elt (0)) && ep->type == NELT_CHDIR)
+ change_dir = chdir_arg (xstrdup (ep->v.name));
- if (name)
+ if (ep)
{
- size_t needed_size;
- buffer->length = strlen (name);
- needed_size = offsetof (struct name, name) + buffer->length + 1;
- if (allocated_size < needed_size)
- {
- do
- {
- allocated_size *= 2;
- if (! allocated_size)
- xalloc_die ();
- }
- while (allocated_size < needed_size);
-
- buffer = xrealloc (buffer, allocated_size);
- }
+ free_name (buffer);
+ buffer = make_name (ep->v.name);
buffer->change_dir = change_dir;
- strcpy (buffer->name, name);
buffer->next = 0;
buffer->found_count = 0;
+ buffer->matching_flags = matching_flags;
+ buffer->directory = NULL;
+ buffer->parent = NULL;
+ buffer->cmdline = true;
- namelist = buffer;
- nametail = &namelist->next;
+ namelist = nametail = buffer;
}
else if (change_dir)
- addname (0, change_dir);
+ addname (0, change_dir, false, NULL);
}
else
{
for (;;)
{
int change_dir0 = change_dir;
- while ((name = name_next (0)) && strcmp (name, "-C") == 0)
- {
- char const *dir = name_next (0);
- if (! dir)
- FATAL_ERROR ((0, 0, _("Missing file name after -C")));
- change_dir = chdir_arg (xstrdup (dir));
- }
- if (name)
- addname (name, change_dir);
+ while ((ep = name_next_elt (0)) && ep->type == NELT_CHDIR)
+ change_dir = chdir_arg (xstrdup (ep->v.name));
+
+ if (ep)
+ addname (ep->v.name, change_dir, true, NULL);
else
{
if (change_dir != change_dir0)
- addname (0, change_dir);
+ addname (NULL, change_dir, false, NULL);
break;
}
}
/* Add a name to the namelist. */
struct name *
-addname (char const *string, int change_dir)
+addname (char const *string, int change_dir, bool cmdline, struct name *parent)
{
- size_t length = string ? strlen (string) : 0;
- struct name *name = xmalloc (offsetof (struct name, name) + length + 1);
+ struct name *name = make_name (string);
- if (string)
- {
- name->fake = 0;
- strcpy (name->name, string);
- }
- else
- {
- name->fake = 1;
-
- /* FIXME: This initialization (and the byte of memory that it
- initializes) is probably not needed, but we are currently in
- bug-fix mode so we'll leave it in for now. */
- name->name[0] = 0;
- }
-
- name->next = 0;
- name->length = length;
+ name->prev = nametail;
+ name->next = NULL;
name->found_count = 0;
- name->regexp = 0; /* assume not a regular expression */
- name->firstch = 1; /* assume first char is literal */
+ name->matching_flags = matching_flags;
name->change_dir = change_dir;
- name->dir_contents = 0;
+ name->directory = NULL;
+ name->parent = parent;
+ name->cmdline = cmdline;
- if (string && is_pattern (string))
- {
- name->regexp = 1;
- if (string[0] == '*' || string[0] == '[' || string[0] == '?')
- name->firstch = 0;
- }
-
- *nametail = name;
- nametail = &name->next;
+ if (nametail)
+ nametail->next = name;
+ else
+ namelist = name;
+ nametail = name;
return name;
}
for (p = namelist; p; p = p->next)
{
- /* If first chars don't match, quick skip. */
-
- if (p->firstch && p->name[0] != file_name[0])
- continue;
-
- if (p->regexp
- ? fnmatch (p->name, file_name, recursion_option) == 0
- : (p->length <= length
- && (file_name[p->length] == '\0'
- || (ISSLASH (file_name[p->length]) && recursion_option))
- && memcmp (file_name, p->name, p->length) == 0))
+ if (p->name[0]
+ && exclude_fnmatch (p->name, file_name, p->matching_flags))
return p;
}
- return 0;
+ return NULL;
+}
+
+void
+remname (struct name *name)
+{
+ struct name *p;
+
+ if ((p = name->prev) != NULL)
+ p->next = name->next;
+ else
+ namelist = name->next;
+
+ if ((p = name->next) != NULL)
+ p->prev = name->prev;
+ else
+ nametail = name->prev;
}
/* Return true if and only if name FILE_NAME (from an archive) matches any
name from the namelist. */
-int
+bool
name_match (const char *file_name)
{
size_t length = strlen (file_name);
struct name *cursor = namelist;
if (!cursor)
- return ! files_from_option;
+ return true;
- if (cursor->fake)
+ if (cursor->name[0] == 0)
{
chdir_do (cursor->change_dir);
- namelist = 0;
- nametail = &namelist;
- return ! files_from_option;
+ namelist = NULL;
+ nametail = NULL;
+ return true;
}
cursor = namelist_match (file_name, length);
if (starting_file_option)
{
free (namelist);
- namelist = 0;
- nametail = &namelist;
+ namelist = NULL;
+ nametail = NULL;
}
chdir_do (cursor->change_dir);
{
name_gather (); /* read one more */
if (namelist->found_count)
- return 0;
+ return false;
}
else
- return 0;
+ return false;
}
}
len = strlen (p->file_name);
for (cursor = namelist; cursor; cursor = cursor->next)
{
- if (cursor->regexp
- || (!WASFOUND(cursor) && !cursor->fake)
+ if ((cursor->name[0] && !WASFOUND (cursor))
|| (len >= cursor->length && ISSLASH (p->file_name[cursor->length])))
return false;
}
return true;
}
+static int
+regex_usage_warning (const char *name)
+{
+ static int warned_once = 0;
+
+ if (warn_regex_usage && fnmatch_pattern_has_wildcards (name, 0))
+ {
+ warned_once = 1;
+ WARN ((0, 0,
+ _("Pattern matching characters used in file names")));
+ WARN ((0, 0,
+ _("Use --wildcards to enable pattern matching,"
+ " or --no-wildcards to suppress this warning")));
+ }
+ return warned_once;
+}
+
/* Print the names of things in the namelist that were not matched. */
void
names_notfound (void)
struct name const *cursor;
for (cursor = namelist; cursor; cursor = cursor->next)
- if (!WASFOUND(cursor) && !cursor->fake)
+ if (!WASFOUND (cursor) && cursor->name[0])
{
- if (cursor->found_count == 0)
- ERROR ((0, 0, _("%s: Not found in archive"),
- quotearg_colon (cursor->name)));
- else
- ERROR ((0, 0, _("%s: Required occurrence not found in archive"),
- quotearg_colon (cursor->name)));
+ regex_usage_warning (cursor->name);
+ ERROR ((0, 0,
+ (cursor->found_count == 0) ?
+ _("%s: Not found in archive") :
+ _("%s: Required occurrence not found in archive"),
+ quotearg_colon (cursor->name)));
}
/* Don't bother freeing the name list; we're about to exit. */
- namelist = 0;
- nametail = &namelist;
+ namelist = NULL;
+ nametail = NULL;
if (same_order_option)
{
- char *name;
+ const char *name;
while ((name = name_next (1)) != NULL)
- ERROR ((0, 0, _("%s: Not found in archive"),
- quotearg_colon (name)));
+ {
+ regex_usage_warning (name);
+ ERROR ((0, 0, _("%s: Not found in archive"),
+ quotearg_colon (name)));
+ }
+ }
+}
+
+void
+label_notfound (void)
+{
+ struct name const *cursor;
+
+ if (!namelist)
+ return;
+
+ for (cursor = namelist; cursor; cursor = cursor->next)
+ if (WASFOUND (cursor))
+ return;
+
+ if (verbose_option)
+ error (0, 0, _("Archive label mismatch"));
+ set_exit_status (TAREXIT_DIFFERS);
+
+ for (cursor = namelist; cursor; cursor = cursor->next)
+ {
+ if (regex_usage_warning (cursor->name))
+ break;
+ }
+
+ /* Don't bother freeing the name list; we're about to exit. */
+ namelist = NULL;
+ nametail = NULL;
+
+ if (same_order_option)
+ {
+ const char *name;
+
+ while ((name = name_next (1)) != NULL
+ && regex_usage_warning (name) == 0)
+ ;
}
}
\f
/* Sorting name lists. */
-/* Sort linked LIST of names, of given LENGTH, using COMPARE to order
- names. Return the sorted list. Apart from the type `struct name'
- and the definition of SUCCESSOR, this is a generic list-sorting
- function, but it's too painful to make it both generic and portable
+/* Sort *singly* linked LIST of names, of given LENGTH, using COMPARE
+ to order names. Return the sorted list. Note that after calling
+ this function, the 'prev' links in list elements are messed up.
+
+ Apart from the type 'struct name' and the definition of SUCCESSOR,
+ this is a generic list-sorting function, but it's too painful to
+ make it both generic and portable
in C. */
static struct name *
-merge_sort (struct name *list, int length,
- int (*compare) (struct name const*, struct name const*))
+merge_sort_sll (struct name *list, int length,
+ int (*compare) (struct name const*, struct name const*))
{
struct name *first_list;
struct name *second_list;
second_list = SUCCESSOR (cursor);
SUCCESSOR (cursor) = 0;
- first_list = merge_sort (first_list, first_length, compare);
- second_list = merge_sort (second_list, second_length, compare);
+ first_list = merge_sort_sll (first_list, first_length, compare);
+ second_list = merge_sort_sll (second_list, second_length, compare);
merge_point = &result;
while (first_list && second_list)
#undef SUCCESSOR
}
+/* Sort doubly linked LIST of names, of given LENGTH, using COMPARE
+ to order names. Return the sorted list. */
+static struct name *
+merge_sort (struct name *list, int length,
+ int (*compare) (struct name const*, struct name const*))
+{
+ struct name *head, *p, *prev;
+ head = merge_sort_sll (list, length, compare);
+ /* Fixup prev pointers */
+ for (prev = NULL, p = head; p; prev = p, p = p->next)
+ p->prev = prev;
+ return head;
+}
+
/* A comparison function for sorting names. Put found names last;
break ties by string comparison. */
static int
-compare_names (struct name const *n1, struct name const *n2)
+compare_names_found (struct name const *n1, struct name const *n2)
{
- int found_diff = WASFOUND(n2) - WASFOUND(n1);
+ int found_diff = WASFOUND (n2) - WASFOUND (n1);
return found_diff ? found_diff : strcmp (n1->name, n2->name);
}
+
+/* Simple comparison by names. */
+static int
+compare_names (struct name const *n1, struct name const *n2)
+{
+ return strcmp (n1->name, n2->name);
+}
+
\f
-/* Add all the dirs under NAME, which names a directory, to the namelist.
- If any of the files is a directory, recurse on the subdirectory.
- DEVICE is the device not to leave, if the -l option is specified. */
+/* Add all the dirs under ST to the namelist NAME, descending the
+ directory hierarchy recursively. */
static void
-add_hierarchy_to_namelist (struct name *name, dev_t device)
+add_hierarchy_to_namelist (struct tar_stat_info *st, struct name *name)
{
- char *file_name = name->name;
- char *buffer = get_directory_contents (file_name, device);
+ const char *buffer;
- if (! buffer)
- name->dir_contents = "\0\0\0\0";
- else
+ name->directory = scan_directory (st);
+ buffer = directory_contents (name->directory);
+ if (buffer)
{
+ struct name *child_head = NULL, *child_tail = NULL;
size_t name_length = name->length;
size_t allocated_length = (name_length >= NAME_FIELD_SIZE
? name_length + NAME_FIELD_SIZE
: NAME_FIELD_SIZE);
char *namebuf = xmalloc (allocated_length + 1);
/* FIXME: + 2 above? */
- char *string;
+ const char *string;
size_t string_length;
int change_dir = name->change_dir;
- name->dir_contents = buffer;
- strcpy (namebuf, file_name);
+ strcpy (namebuf, name->name);
if (! ISSLASH (namebuf[name_length - 1]))
{
namebuf[name_length++] = '/';
string_length = strlen (string);
if (*string == 'D')
{
+ struct name *np;
+ struct tar_stat_info subdir;
+ int subfd;
+
if (allocated_length <= name_length + string_length)
{
do
namebuf = xrealloc (namebuf, allocated_length + 1);
}
strcpy (namebuf + name_length, string + 1);
- add_hierarchy_to_namelist (addname (namebuf, change_dir),
- device);
+ np = addname (namebuf, change_dir, false, name);
+ if (!child_head)
+ child_head = np;
+ else
+ child_tail->sibling = np;
+ child_tail = np;
+
+ tar_stat_init (&subdir);
+ subdir.parent = st;
+ if (st->fd < 0)
+ {
+ subfd = -1;
+ errno = - st->fd;
+ }
+ else
+ subfd = subfile_open (st, string + 1,
+ open_read_flags | O_DIRECTORY);
+ if (subfd < 0)
+ open_diag (namebuf);
+ else
+ {
+ subdir.fd = subfd;
+ if (fstat (subfd, &subdir.stat) != 0)
+ stat_diag (namebuf);
+ else if (! (O_DIRECTORY || S_ISDIR (subdir.stat.st_mode)))
+ {
+ errno = ENOTDIR;
+ open_diag (namebuf);
+ }
+ else
+ {
+ subdir.orig_file_name = xstrdup (namebuf);
+ add_hierarchy_to_namelist (&subdir, np);
+ restore_parent_fd (&subdir);
+ }
+ }
+
+ tar_stat_destroy (&subdir);
}
}
free (namebuf);
+ name->child = child_head;
}
}
\f
+/* Auxiliary functions for hashed table of struct name's. */
+
+static size_t
+name_hash (void const *entry, size_t n_buckets)
+{
+ struct name const *name = entry;
+ return hash_string (name->caname, n_buckets);
+}
+
+/* Compare two directories for equality of their names. */
+static bool
+name_compare (void const *entry1, void const *entry2)
+{
+ struct name const *name1 = entry1;
+ struct name const *name2 = entry2;
+ return strcmp (name1->caname, name2->caname) == 0;
+}
+
+\f
+/* Rebase 'name' member of CHILD and all its siblings to
+ the new PARENT. */
+static void
+rebase_child_list (struct name *child, struct name *parent)
+{
+ size_t old_prefix_len = child->parent->length;
+ size_t new_prefix_len = parent->length;
+ char *new_prefix = parent->name;
+
+ for (; child; child = child->sibling)
+ {
+ size_t size = child->length - old_prefix_len + new_prefix_len;
+ char *newp = xmalloc (size + 1);
+ strcpy (newp, new_prefix);
+ strcat (newp, child->name + old_prefix_len);
+ free (child->name);
+ child->name = newp;
+ child->length = size;
+
+ rebase_directory (child->directory,
+ child->parent->name, old_prefix_len,
+ new_prefix, new_prefix_len);
+ }
+}
+
/* Collect all the names from argv[] (or whatever), expand them into a
directory tree, and sort them. This gets only subdirectories, not
all files. */
collect_and_sort_names (void)
{
struct name *name;
- struct name *next_name;
+ struct name *next_name, *prev_name = NULL;
int num_names;
- struct stat statbuf;
+ Hash_table *nametab;
name_gather ();
+ if (!namelist)
+ addname (".", 0, false, NULL);
+
if (listed_incremental_option)
- read_directory_file ();
+ {
+ switch (chdir_count ())
+ {
+ case 0:
+ break;
+
+ case 1:
+ if (namelist->change_dir == 0)
+ USAGE_ERROR ((0, 0,
+ _("Using -C option inside file list is not "
+ "allowed with --listed-incremental")));
+ break;
+
+ default:
+ USAGE_ERROR ((0, 0,
+ _("Only one -C option is allowed with "
+ "--listed-incremental")));
+ }
- if (!namelist)
- addname (".", 0);
+ read_directory_file ();
+ }
- for (name = namelist; name; name = next_name)
+ num_names = 0;
+ for (name = namelist; name; name = name->next, num_names++)
{
- next_name = name->next;
- if (name->found_count || name->dir_contents)
+ struct tar_stat_info st;
+
+ if (name->found_count || name->directory)
continue;
- if (name->regexp) /* FIXME: just skip regexps for now */
+ if (name->matching_flags & EXCLUDE_WILDCARDS)
+ /* NOTE: EXCLUDE_ANCHORED is not relevant here */
+ /* FIXME: just skip regexps for now */
continue;
chdir_do (name->change_dir);
- if (name->fake)
+
+ if (name->name[0] == 0)
continue;
- if (deref_stat (dereference_option, name->name, &statbuf) != 0)
+ tar_stat_init (&st);
+
+ if (deref_stat (name->name, &st.stat) != 0)
{
stat_diag (name->name);
continue;
}
- if (S_ISDIR (statbuf.st_mode))
+ if (S_ISDIR (st.stat.st_mode))
{
- name->found_count++;
- add_hierarchy_to_namelist (name, statbuf.st_dev);
+ int dir_fd = openat (chdir_fd, name->name,
+ open_read_flags | O_DIRECTORY);
+ if (dir_fd < 0)
+ open_diag (name->name);
+ else
+ {
+ st.fd = dir_fd;
+ if (fstat (dir_fd, &st.stat) != 0)
+ stat_diag (name->name);
+ else if (O_DIRECTORY || S_ISDIR (st.stat.st_mode))
+ {
+ st.orig_file_name = xstrdup (name->name);
+ name->found_count++;
+ add_hierarchy_to_namelist (&st, name);
+ }
+ }
}
+
+ tar_stat_destroy (&st);
}
- num_names = 0;
- for (name = namelist; name; name = name->next)
- num_names++;
namelist = merge_sort (namelist, num_names, compare_names);
- for (name = namelist; name; name = name->next)
- name->found_count = 0;
+ num_names = 0;
+ nametab = hash_initialize (0, 0, name_hash, name_compare, NULL);
+ for (name = namelist; name; name = next_name)
+ {
+ next_name = name->next;
+ name->caname = normalize_filename (name->change_dir, name->name);
+ if (prev_name)
+ {
+ struct name *p = hash_lookup (nametab, name);
+ if (p)
+ {
+ /* Keep the one listed in the command line */
+ if (!name->parent)
+ {
+ if (p->child)
+ rebase_child_list (p->child, name);
+ hash_delete (nametab, name);
+ /* FIXME: remove_directory (p->caname); ? */
+ remname (p);
+ free_name (p);
+ num_names--;
+ }
+ else
+ {
+ if (name->child)
+ rebase_child_list (name->child, p);
+ /* FIXME: remove_directory (name->caname); ? */
+ remname (name);
+ free_name (name);
+ continue;
+ }
+ }
+ }
+ name->found_count = 0;
+ if (!hash_insert (nametab, name))
+ xalloc_die ();
+ prev_name = name;
+ num_names++;
+ }
+ nametail = prev_name;
+ hash_free (nametab);
+
+ namelist = merge_sort (namelist, num_names, compare_names_found);
+
+ if (listed_incremental_option)
+ {
+ for (name = namelist; name && name->name[0] == 0; name++)
+ ;
+ if (name)
+ append_incremental_renames (name->directory);
+ }
}
-/* This is like name_match, except that it returns a pointer to the
- name it matched, and doesn't set FOUND in structure. The caller
- will have to do that if it wants to. Oh, and if the namelist is
- empty, it returns null, unlike name_match, which returns TRUE. */
+/* This is like name_match, except that
+ 1. It returns a pointer to the name it matched, and doesn't set FOUND
+ in structure. The caller will have to do that if it wants to.
+ 2. If the namelist is empty, it returns null, unlike name_match, which
+ returns TRUE. */
struct name *
name_scan (const char *file_name)
{
find and return all the non-found names in the namelist. */
struct name *gnu_list_name;
-char *
+struct name const *
name_from_list (void)
{
if (!gnu_list_name)
gnu_list_name = namelist;
- while (gnu_list_name && (gnu_list_name->found_count || gnu_list_name->fake))
+ while (gnu_list_name
+ && (gnu_list_name->found_count || gnu_list_name->name[0] == 0))
gnu_list_name = gnu_list_name->next;
if (gnu_list_name)
{
gnu_list_name->found_count++;
chdir_do (gnu_list_name->change_dir);
- return gnu_list_name->name;
+ return gnu_list_name;
}
- return 0;
+ return NULL;
}
void
}
/* Yield a newly allocated file name consisting of FILE_NAME concatenated to
- NAME, with an intervening slash if FILE_NAME does not already end in one. */
+ NAME, with an intervening slash if FILE_NAME does not already end in one. */
char *
new_name (const char *file_name, const char *name)
{
bool
excluded_name (char const *name)
{
- return excluded_filename (excluded, name + FILESYSTEM_PREFIX_LEN (name));
-}
-\f
-/* Hash tables of strings. */
-
-/* Calculate the hash of a string. */
-static unsigned
-hash_string_hasher (void const *name, unsigned n_buckets)
-{
- return hash_string (name, n_buckets);
-}
-
-/* Compare two strings for equality. */
-static bool
-hash_string_compare (void const *name1, void const *name2)
-{
- return strcmp (name1, name2) == 0;
-}
-
-/* Return zero if TABLE contains a copy of STRING; otherwise, insert a
- copy of STRING to TABLE and return 1. */
-static bool
-hash_string_insert (Hash_table **table, char const *string)
-{
- Hash_table *t = *table;
- char *s = xstrdup (string);
- char *e;
-
- if (! ((t
- || (*table = t = hash_initialize (0, 0, hash_string_hasher,
- hash_string_compare, 0)))
- && (e = hash_insert (t, s))))
- xalloc_die ();
-
- if (e == s)
- return 1;
- else
- {
- free (s);
- return 0;
- }
-}
-
-/* Return 1 if TABLE contains STRING. */
-static bool
-hash_string_lookup (Hash_table const *table, char const *string)
-{
- return table && hash_lookup (table, string);
+ return excluded_file_name (excluded, name + FILE_SYSTEM_PREFIX_LEN (name));
}
\f
-/* Names to avoid dumping. */
-static Hash_table *avoided_name_table;
-
-/* Remember to not archive NAME. */
-void
-add_avoided_name (char const *name)
-{
- hash_string_insert (&avoided_name_table, name);
-}
-
-/* Should NAME be avoided when archiving? */
-bool
-is_avoided_name (char const *name)
-{
- return hash_string_lookup (avoided_name_table, name);
-}
-\f
-/* Return a safer suffix of FILE_NAME, or "." if it has no safer
- suffix. Check for fully specified file names and other atrocities.
- Warn the user if we do not return NAME. If LINK_TARGET is 1,
- FILE_NAME is the target of a hard link, not a member name. */
-
-char *
-safer_name_suffix (char const *file_name, bool link_target)
-{
- char const *p;
-
- if (absolute_names_option)
- p = file_name;
- else
- {
- /* Skip file system prefixes, leading file name components that contain
- "..", and leading slashes. */
-
- size_t prefix_len = FILESYSTEM_PREFIX_LEN (file_name);
-
- for (p = file_name + prefix_len; *p; )
- {
- if (p[0] == '.' && p[1] == '.' && (ISSLASH (p[2]) || !p[2]))
- prefix_len = p + 2 - file_name;
- do
- {
- char c = *p++;
- if (ISSLASH (c))
- break;
- }
- while (*p);
- }
-
- for (p = file_name + prefix_len; ISSLASH (*p); p++)
- continue;
- prefix_len = p - file_name;
-
- if (prefix_len)
- {
- static Hash_table *prefix_table[2];
- char *prefix = alloca (prefix_len + 1);
- memcpy (prefix, file_name, prefix_len);
- prefix[prefix_len] = '\0';
-
- if (hash_string_insert (&prefix_table[link_target], prefix))
- {
- static char const *const diagnostic[] =
- {
- N_("Removing leading `%s' from member names"),
- N_("Removing leading `%s' from hard link targets")
- };
- WARN ((0, 0, "%s", _(diagnostic[link_target]), prefix));
- }
- }
- }
-
- if (! *p)
- {
- if (p == file_name)
- {
- static char const *const diagnostic[] =
- {
- N_("Substituting `.' for empty member name"),
- N_("Substituting `.' for empty hard link target")
- };
- WARN ((0, 0, "%s", _(diagnostic[link_target])));
- }
-
- p = ".";
- }
-
- return (char *) p;
-}
-\f
/* Return the size of the prefix of FILE_NAME that is removed after
stripping NUM leading file name components. NUM must be
positive. */
size_t
stripped_prefix_len (char const *file_name, size_t num)
{
- char const *p = file_name + FILESYSTEM_PREFIX_LEN (file_name);
+ char const *p = file_name + FILE_SYSTEM_PREFIX_LEN (file_name);
while (ISSLASH (*p))
p++;
while (*p)
bool
contains_dot_dot (char const *name)
{
- char const *p = name + FILESYSTEM_PREFIX_LEN (name);
+ char const *p = name + FILE_SYSTEM_PREFIX_LEN (name);
for (;; p++)
{
if (p[0] == '.' && p[1] == '.' && (ISSLASH (p[2]) || !p[2]))
return 1;
- do
+ while (! ISSLASH (*p))
{
if (! *p++)
return 0;
}
- while (! ISSLASH (*p));
}
}
projects / chaz / tar / blobdiff