/* Miscellaneous functions, not really specific to GNU tar.
- Copyright (C) 1988, 92, 94, 95, 96, 97 Free Software Foundation, Inc.
+
+ Copyright (C) 1988, 1992, 1994, 1995, 1996, 1997, 1999, 2000, 2001,
+ 2003 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
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 Place - Suite 330, Boston, MA 02111-1307, USA. */
+ 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "system.h"
-
-#include "backupfile.h"
#include "rmt.h"
-
-/* The following inclusion for crosschecking prototypes, only. */
#include "common.h"
+#include <quotearg.h>
+#include <save-cwd.h>
+
+static void call_arg_fatal (char const *, char const *)
+ __attribute__ ((noreturn));
\f
/* Handling strings. */
-#define ISPRINT(Char) (ISASCII (Char) && isprint (Char))
-
-/*-------------------------------------------------------------------------.
-| Assign STRING to a copy of VALUE if not NULL, or to NULL. If STRING was |
-| not NULL, it is freed first. |
-`-------------------------------------------------------------------------*/
-
+/* Assign STRING to a copy of VALUE if not zero, or to zero. If
+ STRING was nonzero, it is freed first. */
void
assign_string (char **string, const char *value)
{
if (*string)
free (*string);
- *string = value ? xstrdup (value) : NULL;
+ *string = value ? xstrdup (value) : 0;
}
-/*------------------------------------------------------------------------.
-| Allocate a copy of the string quoted as in C, and returns that. If the |
-| string does not have to be quoted, it returns the NULL string. The |
-| allocated copy should normally be freed with free() after the caller is |
-| done with it. |
-| |
-| This is used in two contexts only: either listing a tar file for the |
-| --list (-t) option, or generating the directory file in incremental |
-| dumps. |
-`------------------------------------------------------------------------*/
-
+/* Allocate a copy of the string quoted as in C, and returns that. If
+ the string does not have to be quoted, it returns a null pointer.
+ The allocated copy should normally be freed with free() after the
+ caller is done with it.
+
+ This is used in one context only: generating the directory file in
+ incremental dumps. The quoted string is not intended for human
+ consumption; it is intended only for unquote_string. The quoting
+ is locale-independent, so that users needn't worry about locale
+ when reading directory files. This means that we can't use
+ quotearg, as quotearg is locale-dependent and is meant for human
+ consumption. */
char *
quote_copy_string (const char *string)
{
const char *source = string;
- char *destination = NULL;
- char *buffer = NULL;
+ char *destination = 0;
+ char *buffer = 0;
int copying = 0;
while (*source)
{
- int character = (unsigned char) *source++;
+ int character = *source++;
- if (character == '\\')
+ switch (character)
{
+ case '\n': case '\\':
if (!copying)
{
- int length = (source - string) - 1;
+ size_t length = (source - string) - 1;
copying = 1;
- buffer = (char *) xmalloc (length + 5 + strlen (source) * 4);
- memcpy (buffer, string, (size_t) length);
+ buffer = xmalloc (length + 2 + 2 * strlen (source) + 1);
+ memcpy (buffer, string, length);
destination = buffer + length;
}
*destination++ = '\\';
- *destination++ = '\\';
- }
- else if (ISPRINT (character))
- {
+ *destination++ = character == '\\' ? '\\' : 'n';
+ break;
+
+ default:
if (copying)
*destination++ = character;
- }
- else
- {
- if (!copying)
- {
- int length = (source - string) - 1;
-
- copying = 1;
- buffer = (char *) xmalloc (length + 5 + strlen (source) * 4);
- memcpy (buffer, string, (size_t) length);
- destination = buffer + length;
- }
- *destination++ = '\\';
- switch (character)
- {
- case '\n':
- *destination++ = 'n';
- break;
-
- case '\t':
- *destination++ = 't';
- break;
-
- case '\f':
- *destination++ = 'f';
- break;
-
- case '\b':
- *destination++ = 'b';
- break;
-
- case '\r':
- *destination++ = 'r';
- break;
-
- case '\177':
- *destination++ = '?';
- break;
-
- default:
- *destination++ = (character >> 6) + '0';
- *destination++ = ((character >> 3) & 07) + '0';
- *destination++ = (character & 07) + '0';
- break;
- }
+ break;
}
}
if (copying)
*destination = '\0';
return buffer;
}
- return NULL;
+ return 0;
}
-/*-------------------------------------------------------------------------.
-| Takes a quoted C string (like those produced by quote_copy_string) and |
-| turns it back into the un-quoted original. This is done in place. |
-| Returns 0 only if the string was not properly quoted, but completes the |
-| unquoting anyway. |
-| |
-| This is used for reading the saved directory file in incremental dumps. |
-| It is used for decoding old `N' records (demangling names). But also, |
-| it is used for decoding file arguments, would they come from the shell |
-| or a -T file, and for decoding the --exclude argument. |
-`-------------------------------------------------------------------------*/
+/* Takes a quoted C string (like those produced by quote_copy_string)
+ and turns it back into the un-quoted original. This is done in
+ place. Returns 0 only if the string was not properly quoted, but
+ completes the unquoting anyway.
+ This is used for reading the saved directory file in incremental
+ dumps. It is used for decoding old `N' records (demangling names).
+ But also, it is used for decoding file arguments, would they come
+ from the shell or a -T file, and for decoding the --exclude
+ argument. */
int
unquote_string (char *string)
{
char *source = string;
char *destination = string;
+ /* Escape sequences other than \\ and \n are no longer generated by
+ quote_copy_string, but accept them for backwards compatibility,
+ and also because unquote_string is used for purposes other than
+ parsing the output of quote_copy_string. */
+
while (*source)
if (*source == '\\')
switch (*++source)
return result;
}
\f
-/* Sorting lists. */
+/* File handling. */
-/*---.
-| ? |
-`---*/
+/* Saved names in case backup needs to be undone. */
+static char *before_backup_name;
+static char *after_backup_name;
-char *
-merge_sort (char *list, int length, int offset, int (*compare) (char *, char *))
+/* Return 1 if PATH is obviously "." or "/". */
+static bool
+must_be_dot_or_slash (char const *path)
{
- char *first_list;
- char *second_list;
- int first_length;
- int second_length;
- char *result;
- char **merge_point;
- char *cursor;
- int counter;
-
-#define SUCCESSOR(Pointer) \
- (*((char **) (((char *) (Pointer)) + offset)))
-
- if (length == 1)
- return list;
+ path += FILESYSTEM_PREFIX_LEN (path);
- if (length == 2)
+ if (ISSLASH (path[0]))
{
- if ((*compare) (list, SUCCESSOR (list)) > 0)
- {
- result = SUCCESSOR (list);
- SUCCESSOR (result) = list;
- SUCCESSOR (list) = NULL;
- return result;
- }
- return list;
+ for (;;)
+ if (ISSLASH (path[1]))
+ path++;
+ else if (path[1] == '.' && ISSLASH (path[2 + (path[2] == '.')]))
+ path += 2 + (path[2] == '.');
+ else
+ return ! path[1];
}
-
- first_list = list;
- first_length = (length + 1) / 2;
- second_length = length / 2;
- for (cursor = list, counter = first_length - 1;
- counter;
- cursor = SUCCESSOR (cursor), counter--)
- continue;
- second_list = SUCCESSOR (cursor);
- SUCCESSOR (cursor) = NULL;
-
- first_list = merge_sort (first_list, first_length, offset, compare);
- second_list = merge_sort (second_list, second_length, offset, compare);
-
- merge_point = &result;
- while (first_list && second_list)
- if ((*compare) (first_list, second_list) < 0)
- {
- cursor = SUCCESSOR (first_list);
- *merge_point = first_list;
- merge_point = &SUCCESSOR (first_list);
- first_list = cursor;
- }
- else
- {
- cursor = SUCCESSOR (second_list);
- *merge_point = second_list;
- merge_point = &SUCCESSOR (second_list);
- second_list = cursor;
- }
- if (first_list)
- *merge_point = first_list;
else
- *merge_point = second_list;
-
- return result;
+ {
+ while (path[0] == '.' && ISSLASH (path[1]))
+ {
+ path += 2;
+ while (ISSLASH (*path))
+ path++;
+ }
-#undef SUCCESSOR
+ return ! path[0] || (path[0] == '.' && ! path[1]);
+ }
}
-\f
-/* File handling. */
-
-/* Saved names in case backup needs to be undone. */
-static char *before_backup_name = NULL;
-static char *after_backup_name = NULL;
-/*------------------------------------------------------------------------.
-| Returns nonzero if p is `.' or `..'. This could be a macro for speed. |
-`------------------------------------------------------------------------*/
+/* Some implementations of rmdir let you remove '.' or '/'.
+ Report an error with errno set to zero for obvious cases of this;
+ otherwise call rmdir. */
+static int
+safer_rmdir (const char *path)
+{
+ if (must_be_dot_or_slash (path))
+ {
+ errno = 0;
+ return -1;
+ }
-/* Early Solaris 2.4 readdir may return d->d_name as `' in NFS-mounted
- directories. The workaround here skips `' just like `.'. Without it,
- GNU tar would then treat `' much like `.' and loop endlessly. */
+ return rmdir (path);
+}
+/* Remove PATH, returning 1 on success. If PATH is a directory, then
+ if OPTION is RECURSIVE_REMOVE_OPTION is set remove PATH
+ recursively; otherwise, remove it only if it is empty. If PATH is
+ a directory that cannot be removed (e.g., because it is nonempty)
+ and if OPTION is WANT_DIRECTORY_REMOVE_OPTION, then return -1.
+ Return 0 on error, with errno set; if PATH is obviously the working
+ directory return zero with errno set to zero. */
int
-is_dot_or_dotdot (const char *p)
+remove_any_file (const char *path, enum remove_option option)
{
- return (p[0] == '\0'
- || (p[0] == '.' && (p[1] == '\0'
- || (p[1] == '.' && p[2] == '\0'))));
-}
+ /* Try unlink first if we are not root, as this saves us a system
+ call in the common case where we're removing a non-directory. */
+ if (! we_are_root)
+ {
+ if (unlink (path) == 0)
+ return 1;
-/*-------------------------------------------------------------------------.
-| Delete PATH, whatever it might be. If RECURSE, first recursively delete |
-| the contents of PATH when it is a directory. Return zero on any error, |
-| with errno set. As a special case, if we fail to delete a directory |
-| when not RECURSE, do not set errno (just be tolerant to this error). |
-`-------------------------------------------------------------------------*/
+ /* POSIX 1003.1-2001 requires EPERM when attempting to unlink a
+ directory without appropriate privileges, but many Linux
+ kernels return the more-sensible EISDIR. */
+ if (errno != EPERM && errno != EISDIR)
+ return 0;
+ }
-int
-remove_any_file (const char *path, int recurse)
-{
- struct stat stat_buffer;
+ if (safer_rmdir (path) == 0)
+ return 1;
- if (lstat (path, &stat_buffer) < 0)
- return 0;
+ switch (errno)
+ {
+ case ENOTDIR:
+ return we_are_root && unlink (path) == 0;
- if (S_ISDIR (stat_buffer.st_mode))
- if (recurse)
- {
- DIR *dirp = opendir (path);
- struct dirent *dp;
+ case 0:
+ case EEXIST:
+#if defined ENOTEMPTY && ENOTEMPTY != EEXIST
+ case ENOTEMPTY:
+#endif
+ switch (option)
+ {
+ case ORDINARY_REMOVE_OPTION:
+ break;
- if (dirp == NULL)
- return 0;
+ case WANT_DIRECTORY_REMOVE_OPTION:
+ return -1;
- while (dp = readdir (dirp), dp && !is_dot_or_dotdot (dp->d_name))
+ case RECURSIVE_REMOVE_OPTION:
{
- char *path_buffer = new_name (path, dp->d_name);
+ char *directory = savedir (path);
+ char const *entry;
+ size_t entrylen;
- if (!remove_any_file (path_buffer, 1))
- {
- int saved_errno = errno;
+ if (! directory)
+ return 0;
+ for (entry = directory;
+ (entrylen = strlen (entry)) != 0;
+ entry += entrylen + 1)
+ {
+ char *path_buffer = new_name (path, entry);
+ int r = remove_any_file (path_buffer, 1);
+ int e = errno;
free (path_buffer);
- closedir (dirp);
- errno = saved_errno; /* FIXME: errno should be read-only */
- return 0;
+
+ if (! r)
+ {
+ free (directory);
+ errno = e;
+ return 0;
+ }
}
- free (path_buffer);
+
+ free (directory);
+ return safer_rmdir (path) == 0;
}
- closedir (dirp);
- return rmdir (path) >= 0;
- }
- else
- {
- /* FIXME: Saving errno might not be needed anymore, now that
- extract_archive tests for the special case before recovery. */
- int saved_errno = errno;
-
- if (rmdir (path) >= 0)
- return 1;
- errno = saved_errno; /* FIXME: errno should be read-only */
- return 0;
- }
+ }
+ break;
+ }
- return unlink (path) >= 0;
+ return 0;
}
-/*-------------------------------------------------------------------------.
-| Check if PATH already exists and make a backup of it right now. Return |
-| success (nonzero) only if the backup in either unneeded, or successful. |
-| |
-| For now, directories are considered to never need backup. If ARCHIVE is |
-| nonzero, this is the archive and so, we do not have to backup block or |
-| character devices, nor remote entities. |
-`-------------------------------------------------------------------------*/
-
+/* Check if PATH already exists and make a backup of it right now.
+ Return success (nonzero) only if the backup in either unneeded, or
+ successful. For now, directories are considered to never need
+ backup. If ARCHIVE is nonzero, this is the archive and so, we do
+ not have to backup block or character devices, nor remote entities. */
int
maybe_backup_file (const char *path, int archive)
{
if (errno == ENOENT)
return 1;
- ERROR ((0, errno, "%s", path));
+ stat_error (path);
return 0;
}
if (S_ISDIR (file_stat.st_mode))
return 1;
-#ifdef S_ISBLK
- if (archive && S_ISBLK (file_stat.st_mode))
+ if (archive && (S_ISBLK (file_stat.st_mode) || S_ISCHR (file_stat.st_mode)))
return 1;
-#endif
-
-#ifdef S_ISCHR
- if (archive && S_ISCHR (file_stat.st_mode))
- return 1;
-#endif
assign_string (&before_backup_name, path);
possible, real problems are unlikely. Doing any better would require a
convention, GNU-wide, for all programs doing backups. */
- assign_string (&after_backup_name, NULL);
- after_backup_name = find_backup_file_name (path);
- if (after_backup_name == NULL)
- FATAL_ERROR ((0, 0, "Virtual memory exhausted"));
+ assign_string (&after_backup_name, 0);
+ after_backup_name = find_backup_file_name (path, backup_type);
+ if (! after_backup_name)
+ xalloc_die ();
if (rename (before_backup_name, after_backup_name) == 0)
{
if (verbose_option)
- fprintf (stdlis, _("Renaming previous `%s' to `%s'\n"),
- before_backup_name, after_backup_name);
+ fprintf (stdlis, _("Renaming %s to %s\n"),
+ quote_n (0, before_backup_name),
+ quote_n (1, after_backup_name));
return 1;
}
-
- /* The backup operation failed. */
-
- ERROR ((0, errno, _("%s: Cannot rename for backup"), before_backup_name));
- assign_string (&after_backup_name, NULL);
- return 0;
+ else
+ {
+ /* The backup operation failed. */
+ int e = errno;
+ ERROR ((0, e, _("%s: Cannot rename to %s"),
+ quotearg_colon (before_backup_name),
+ quote_n (1, after_backup_name)));
+ assign_string (&after_backup_name, 0);
+ return 0;
+ }
}
-/*-----------------------------------------------------------------------.
-| Try to restore the recently backed up file to its original name. This |
-| is usually only needed after a failed extraction. |
-`-----------------------------------------------------------------------*/
-
+/* Try to restore the recently backed up file to its original name.
+ This is usually only needed after a failed extraction. */
void
undo_last_backup (void)
{
if (after_backup_name)
{
if (rename (after_backup_name, before_backup_name) != 0)
- ERROR ((0, errno, _("%s: Cannot rename from backup"),
- before_backup_name));
+ {
+ int e = errno;
+ ERROR ((0, e, _("%s: Cannot rename to %s"),
+ quotearg_colon (after_backup_name),
+ quote_n (1, before_backup_name)));
+ }
if (verbose_option)
- fprintf (stdlis, _("Renaming `%s' back to `%s'\n"),
- after_backup_name, before_backup_name);
- assign_string (&after_backup_name, NULL);
+ fprintf (stdlis, _("Renaming %s back to %s\n"),
+ quote_n (0, after_backup_name),
+ quote_n (1, before_backup_name));
+ assign_string (&after_backup_name, 0);
}
}
+
+/* Depending on DEREF, apply either stat or lstat to (NAME, BUF). */
+int
+deref_stat (bool deref, char const *name, struct stat *buf)
+{
+ return deref ? stat (name, buf) : lstat (name, buf);
+}
+
+/* A description of a working directory. */
+struct wd
+{
+ char const *name;
+ int saved;
+ struct saved_cwd saved_cwd;
+};
+
+/* A vector of chdir targets. wd[0] is the initial working directory. */
+static struct wd *wd;
+
+/* The number of working directories in the vector. */
+static size_t wds;
+
+/* The allocated size of the vector. */
+static size_t wd_alloc;
+
+/* DIR is the operand of a -C option; add it to vector of chdir targets,
+ and return the index of its location. */
+int
+chdir_arg (char const *dir)
+{
+ if (wds == wd_alloc)
+ {
+ wd_alloc = 2 * (wd_alloc + 1);
+ wd = xrealloc (wd, sizeof *wd * wd_alloc);
+ if (! wds)
+ {
+ wd[wds].name = ".";
+ wd[wds].saved = 0;
+ wds++;
+ }
+ }
+
+ /* Optimize the common special case of the working directory,
+ or the working directory as a prefix. */
+ if (dir[0])
+ {
+ while (dir[0] == '.' && ISSLASH (dir[1]))
+ for (dir += 2; ISSLASH (*dir); dir++)
+ continue;
+ if (! dir[dir[0] == '.'])
+ return wds - 1;
+ }
+
+ wd[wds].name = dir;
+ wd[wds].saved = 0;
+ return wds++;
+}
+
+/* Change to directory I. If I is 0, change to the initial working
+ directory; otherwise, I must be a value returned by chdir_arg. */
+void
+chdir_do (int i)
+{
+ static int previous;
+
+ if (previous != i)
+ {
+ struct wd *prev = &wd[previous];
+ struct wd *curr = &wd[i];
+
+ if (! prev->saved)
+ {
+ prev->saved = 1;
+ if (save_cwd (&prev->saved_cwd) != 0)
+ FATAL_ERROR ((0, 0, _("Cannot save working directory")));
+ }
+
+ if (curr->saved)
+ {
+ if (restore_cwd (&curr->saved_cwd))
+ FATAL_ERROR ((0, 0, _("Cannot change working directory")));
+ }
+ else
+ {
+ if (i && ! ISSLASH (curr->name[0]))
+ chdir_do (i - 1);
+ if (chdir (curr->name) != 0)
+ chdir_fatal (curr->name);
+ }
+
+ previous = i;
+ }
+}
+\f
+/* Decode MODE from its binary form in a stat structure, and encode it
+ into a 9-byte string STRING, terminated with a NUL. */
+
+void
+decode_mode (mode_t mode, char *string)
+{
+ *string++ = mode & S_IRUSR ? 'r' : '-';
+ *string++ = mode & S_IWUSR ? 'w' : '-';
+ *string++ = (mode & S_ISUID
+ ? (mode & S_IXUSR ? 's' : 'S')
+ : (mode & S_IXUSR ? 'x' : '-'));
+ *string++ = mode & S_IRGRP ? 'r' : '-';
+ *string++ = mode & S_IWGRP ? 'w' : '-';
+ *string++ = (mode & S_ISGID
+ ? (mode & S_IXGRP ? 's' : 'S')
+ : (mode & S_IXGRP ? 'x' : '-'));
+ *string++ = mode & S_IROTH ? 'r' : '-';
+ *string++ = mode & S_IWOTH ? 'w' : '-';
+ *string++ = (mode & S_ISVTX
+ ? (mode & S_IXOTH ? 't' : 'T')
+ : (mode & S_IXOTH ? 'x' : '-'));
+ *string = '\0';
+}
+
+/* Report an error associated with the system call CALL and the
+ optional name NAME. */
+static void
+call_arg_error (char const *call, char const *name)
+{
+ int e = errno;
+ ERROR ((0, e, _("%s: Cannot %s"), quotearg_colon (name), call));
+}
+
+/* Report a fatal error associated with the system call CALL and
+ the optional file name NAME. */
+static void
+call_arg_fatal (char const *call, char const *name)
+{
+ int e = errno;
+ FATAL_ERROR ((0, e, _("%s: Cannot %s"), quotearg_colon (name), call));
+}
+
+/* Report a warning associated with the system call CALL and
+ the optional file name NAME. */
+static void
+call_arg_warn (char const *call, char const *name)
+{
+ int e = errno;
+ WARN ((0, e, _("%s: Warning: Cannot %s"), quotearg_colon (name), call));
+}
+
+void
+chdir_fatal (char const *name)
+{
+ call_arg_fatal ("chdir", name);
+}
+
+void
+chmod_error_details (char const *name, mode_t mode)
+{
+ int e = errno;
+ char buf[10];
+ decode_mode (mode, buf);
+ ERROR ((0, e, _("%s: Cannot change mode to %s"),
+ quotearg_colon (name), buf));
+}
+
+void
+chown_error_details (char const *name, uid_t uid, gid_t gid)
+{
+ int e = errno;
+ ERROR ((0, e, _("%s: Cannot change ownership to uid %lu, gid %lu"),
+ quotearg_colon (name), (unsigned long) uid, (unsigned long) gid));
+}
+
+void
+close_error (char const *name)
+{
+ call_arg_error ("close", name);
+}
+
+void
+close_fatal (char const *name)
+{
+ call_arg_fatal ("close", name);
+}
+
+void
+close_warn (char const *name)
+{
+ call_arg_warn ("close", name);
+}
+
+void
+exec_fatal (char const *name)
+{
+ call_arg_fatal ("exec", name);
+}
+
+void
+link_error (char const *target, char const *source)
+{
+ int e = errno;
+ ERROR ((0, e, _("%s: Cannot hard link to %s"),
+ quotearg_colon (source), quote_n (1, target)));
+}
+
+void
+mkdir_error (char const *name)
+{
+ call_arg_error ("mkdir", name);
+}
+
+void
+mkfifo_error (char const *name)
+{
+ call_arg_error ("mkfifo", name);
+}
+
+void
+mknod_error (char const *name)
+{
+ call_arg_error ("mknod", name);
+}
+
+void
+open_error (char const *name)
+{
+ call_arg_error ("open", name);
+}
+
+void
+open_fatal (char const *name)
+{
+ call_arg_fatal ("open", name);
+}
+
+void
+open_warn (char const *name)
+{
+ call_arg_warn ("open", name);
+}
+
+void
+read_error (char const *name)
+{
+ call_arg_error ("read", name);
+}
+
+void
+read_error_details (char const *name, off_t offset, size_t size)
+{
+ char buf[UINTMAX_STRSIZE_BOUND];
+ int e = errno;
+ ERROR ((0, e,
+ _("%s: Read error at byte %s, reading %lu bytes"),
+ quotearg_colon (name), STRINGIFY_BIGINT (offset, buf),
+ (unsigned long) size));
+}
+
+void
+read_warn_details (char const *name, off_t offset, size_t size)
+{
+ char buf[UINTMAX_STRSIZE_BOUND];
+ int e = errno;
+ WARN ((0, e,
+ _("%s: Warning: Read error at byte %s, reading %lu bytes"),
+ quotearg_colon (name), STRINGIFY_BIGINT (offset, buf),
+ (unsigned long) size));
+}
+
+void
+read_fatal (char const *name)
+{
+ call_arg_fatal ("read", name);
+}
+
+void
+read_fatal_details (char const *name, off_t offset, size_t size)
+{
+ char buf[UINTMAX_STRSIZE_BOUND];
+ int e = errno;
+ FATAL_ERROR ((0, e,
+ _("%s: Read error at byte %s, reading %lu bytes"),
+ quotearg_colon (name), STRINGIFY_BIGINT (offset, buf),
+ (unsigned long) size));
+}
+
+void
+readlink_error (char const *name)
+{
+ call_arg_error ("readlink", name);
+}
+
+void
+readlink_warn (char const *name)
+{
+ call_arg_warn ("readlink", name);
+}
+
+void
+savedir_error (char const *name)
+{
+ call_arg_error ("savedir", name);
+}
+
+void
+savedir_warn (char const *name)
+{
+ call_arg_warn ("savedir", name);
+}
+
+void
+seek_error (char const *name)
+{
+ call_arg_error ("seek", name);
+}
+
+void
+seek_error_details (char const *name, off_t offset)
+{
+ char buf[UINTMAX_STRSIZE_BOUND];
+ int e = errno;
+ ERROR ((0, e, _("%s: Cannot seek to %s"),
+ quotearg_colon (name),
+ STRINGIFY_BIGINT (offset, buf)));
+}
+
+void
+seek_warn (char const *name)
+{
+ call_arg_warn ("seek", name);
+}
+
+void
+seek_warn_details (char const *name, off_t offset)
+{
+ char buf[UINTMAX_STRSIZE_BOUND];
+ int e = errno;
+ WARN ((0, e, _("%s: Warning: Cannot seek to %s"),
+ quotearg_colon (name),
+ STRINGIFY_BIGINT (offset, buf)));
+}
+
+void
+symlink_error (char const *contents, char const *name)
+{
+ int e = errno;
+ ERROR ((0, e, _("%s: Cannot create symlink to %s"),
+ quotearg_colon (name), quote_n (1, contents)));
+}
+
+void
+stat_error (char const *name)
+{
+ call_arg_error ("stat", name);
+}
+
+void
+stat_warn (char const *name)
+{
+ call_arg_warn ("stat", name);
+}
+
+void
+truncate_error (char const *name)
+{
+ call_arg_error ("truncate", name);
+}
+
+void
+truncate_warn (char const *name)
+{
+ call_arg_warn ("truncate", name);
+}
+
+void
+unlink_error (char const *name)
+{
+ call_arg_error ("unlink", name);
+}
+
+void
+utime_error (char const *name)
+{
+ call_arg_error ("utime", name);
+}
+
+void
+waitpid_error (char const *name)
+{
+ call_arg_error ("waitpid", name);
+}
+
+void
+write_error (char const *name)
+{
+ call_arg_error ("write", name);
+}
+
+void
+write_error_details (char const *name, ssize_t status, size_t size)
+{
+ if (status < 0)
+ write_error (name);
+ else
+ ERROR ((0, 0, _("%s: Wrote only %lu of %lu bytes"),
+ name, (unsigned long) status, (unsigned long) record_size));
+}
+
+void
+write_fatal (char const *name)
+{
+ call_arg_fatal ("write", name);
+}
+
+void
+write_fatal_details (char const *name, ssize_t status, size_t size)
+{
+ write_error_details (name, status, size);
+ fatal_exit ();
+}
+
+
+/* Fork, aborting if unsuccessful. */
+pid_t
+xfork (void)
+{
+ pid_t p = fork ();
+ if (p == (pid_t) -1)
+ call_arg_fatal ("fork", _("child process"));
+ return p;
+}
+
+/* Create a pipe, aborting if unsuccessful. */
+void
+xpipe (int fd[2])
+{
+ if (pipe (fd) < 0)
+ call_arg_fatal ("pipe", _("interprocess channel"));
+}
+
+/* Return an unambiguous printable representation, allocated in slot N,
+ for NAME, suitable for diagnostics. */
+char const *
+quote_n (int n, char const *name)
+{
+ return quotearg_n_style (n, locale_quoting_style, name);
+}
+
+/* Return an unambiguous printable representation of NAME, suitable
+ for diagnostics. */
+char const *
+quote (char const *name)
+{
+ return quote_n (0, name);
+}
projects / chaz / tar / commitdiff
