/* File IO for GNU Emacs.
-Copyright (C) 1985-1988, 1993-2012 Free Software Foundation, Inc.
+Copyright (C) 1985-1988, 1993-2013 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include <selinux/context.h>
#endif
+#ifdef HAVE_POSIX_ACL
+#include <sys/acl.h>
+#endif
+
#include <c-ctype.h>
#include "lisp.h"
static Lisp_Object Qset_file_times;
static Lisp_Object Qfile_selinux_context;
static Lisp_Object Qset_file_selinux_context;
+static Lisp_Object Qfile_acl;
+static Lisp_Object Qset_file_acl;
static Lisp_Object Qfile_newer_than_file_p;
Lisp_Object Qinsert_file_contents;
Lisp_Object Qwrite_region;
register const char *beg;
#else
register char *beg;
+ Lisp_Object tem_fn;
#endif
register const char *p;
Lisp_Object handler;
strcat (res, "/");
beg = res;
p = beg + strlen (beg);
+ dostounix_filename (beg);
+ tem_fn = make_specified_string (beg, -1, p - beg,
+ STRING_MULTIBYTE (filename));
}
+ else
+ tem_fn = make_specified_string (beg - 2, -1, p - beg + 2,
+ STRING_MULTIBYTE (filename));
}
- dostounix_filename (beg);
-#endif /* DOS_NT */
-
+ else if (STRING_MULTIBYTE (filename))
+ {
+ tem_fn = ENCODE_FILE (make_specified_string (beg, -1, p - beg, 1));
+ dostounix_filename (SSDATA (tem_fn));
+ tem_fn = DECODE_FILE (tem_fn);
+ }
+ else
+ {
+ dostounix_filename (beg);
+ tem_fn = make_specified_string (beg, -1, p - beg, 0);
+ }
+ return tem_fn;
+#else /* DOS_NT */
return make_specified_string (beg, -1, p - beg, STRING_MULTIBYTE (filename));
+#endif /* DOS_NT */
}
DEFUN ("file-name-nondirectory", Ffile_name_nondirectory,
return Ffile_name_directory (filename);
}
-/* Convert from file name SRC of length SRCLEN to directory name
- in DST. On UNIX, just make sure there is a terminating /.
- Return the length of DST. */
+/* Convert from file name SRC of length SRCLEN to directory name in
+ DST. MULTIBYTE non-zero means the file name in SRC is a multibyte
+ string. On UNIX, just make sure there is a terminating /. Return
+ the length of DST in bytes. */
static ptrdiff_t
-file_name_as_directory (char *dst, const char *src, ptrdiff_t srclen)
+file_name_as_directory (char *dst, const char *src, ptrdiff_t srclen,
+ bool multibyte)
{
if (srclen == 0)
{
srclen++;
}
#ifdef DOS_NT
- dostounix_filename (dst);
+ if (multibyte)
+ {
+ Lisp_Object tem_fn = make_specified_string (dst, -1, srclen, 1);
+
+ tem_fn = ENCODE_FILE (tem_fn);
+ dostounix_filename (SSDATA (tem_fn));
+ tem_fn = DECODE_FILE (tem_fn);
+ memcpy (dst, SSDATA (tem_fn), (srclen = SBYTES (tem_fn)) + 1);
+ }
+ else
+ dostounix_filename (dst);
#endif
return srclen;
}
}
buf = alloca (SBYTES (file) + 10);
- length = file_name_as_directory (buf, SSDATA (file), SBYTES (file));
+ length = file_name_as_directory (buf, SSDATA (file), SBYTES (file),
+ STRING_MULTIBYTE (file));
return make_specified_string (buf, -1, length, STRING_MULTIBYTE (file));
}
\f
-/* Convert from directory name SRC of length SRCLEN to
- file name in DST. On UNIX, just make sure there isn't
- a terminating /. Return the length of DST. */
+/* Convert from directory name SRC of length SRCLEN to file name in
+ DST. MULTIBYTE non-zero means the file name in SRC is a multibyte
+ string. On UNIX, just make sure there isn't a terminating /.
+ Return the length of DST in bytes. */
static ptrdiff_t
-directory_file_name (char *dst, char *src, ptrdiff_t srclen)
+directory_file_name (char *dst, char *src, ptrdiff_t srclen, bool multibyte)
{
/* Process as Unix format: just remove any final slash.
But leave "/" unchanged; do not change it to "". */
srclen--;
}
#ifdef DOS_NT
- dostounix_filename (dst);
+ if (multibyte)
+ {
+ Lisp_Object tem_fn = make_specified_string (dst, -1, srclen, 1);
+
+ tem_fn = ENCODE_FILE (tem_fn);
+ dostounix_filename (SSDATA (tem_fn));
+ tem_fn = DECODE_FILE (tem_fn);
+ memcpy (dst, SSDATA (tem_fn), (srclen = SBYTES (tem_fn)) + 1);
+ }
+ else
+ dostounix_filename (dst);
#endif
return srclen;
}
}
buf = alloca (SBYTES (directory) + 20);
- length = directory_file_name (buf, SSDATA (directory), SBYTES (directory));
+ length = directory_file_name (buf, SSDATA (directory), SBYTES (directory),
+ STRING_MULTIBYTE (directory));
return make_specified_string (buf, -1, length, STRING_MULTIBYTE (directory));
}
#ifdef DOS_NT
/* Make sure directories are all separated with /, but
avoid allocation of a new string when not required. */
- dostounix_filename (nm);
+ if (multibyte)
+ {
+ Lisp_Object tem_name = make_specified_string (nm, -1, strlen (nm),
+ multibyte);
+
+ tem_name = ENCODE_FILE (tem_name);
+ dostounix_filename (SSDATA (tem_name));
+ tem_name = DECODE_FILE (tem_name);
+ memcpy (nm, SSDATA (tem_name), SBYTES (tem_name) + 1);
+ }
+ else
+ dostounix_filename (nm);
#ifdef WINDOWSNT
if (IS_DIRECTORY_SEP (nm[1]))
{
/* `egetenv' may return a unibyte string, which will bite us since
we expect the directory to be multibyte. */
tem = build_string (newdir);
- if (!STRING_MULTIBYTE (tem))
+ if (multibyte && !STRING_MULTIBYTE (tem))
{
hdir = DECODE_FILE (tem);
newdir = SSDATA (hdir);
o [p - nm] = 0;
block_input ();
- pw = (struct passwd *) getpwnam (o + 1);
+ pw = getpwnam (o + 1);
unblock_input ();
if (pw)
{
+ Lisp_Object tem;
+
newdir = pw->pw_dir;
+ /* `getpwnam' may return a unibyte string, which will
+ bite us since we expect the directory to be
+ multibyte. */
+ tem = build_string (newdir);
+ if (multibyte && !STRING_MULTIBYTE (tem))
+ {
+ hdir = DECODE_FILE (tem);
+ newdir = SSDATA (hdir);
+ }
nm = p;
#ifdef DOS_NT
collapse_newdir = 0;
adir = alloca (MAXPATHLEN + 1);
if (!getdefdir (c_toupper (drive) - 'A' + 1, adir))
adir = NULL;
+ else if (multibyte)
+ {
+ Lisp_Object tem = build_string (adir);
+
+ tem = DECODE_FILE (tem);
+ memcpy (adir, SSDATA (tem), SBYTES (tem) + 1);
+ }
}
if (!adir)
{
indirectly by prepending newdir to nm if necessary, and using
cwd (or the wd of newdir's drive) as the new newdir. */
char *adir;
+
if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1]))
{
drive = (unsigned char) newdir[0];
{
ptrdiff_t newlen = strlen (newdir);
char *tmp = alloca (newlen + strlen (nm) + 2);
- file_name_as_directory (tmp, newdir, newlen);
+ file_name_as_directory (tmp, newdir, newlen, multibyte);
strcat (tmp, nm);
nm = tmp;
}
if (drive)
{
if (!getdefdir (c_toupper (drive) - 'A' + 1, adir))
- newdir = "/";
+ strcpy (adir, "/");
}
else
- getwd (adir);
+ getcwd (adir, MAXPATHLEN + 1);
+ if (multibyte)
+ {
+ Lisp_Object tem = build_string (adir);
+
+ tem = DECODE_FILE (tem);
+ memcpy (adir, SSDATA (tem), SBYTES (tem) + 1);
+ }
newdir = adir;
}
strcpy (target, newdir);
}
else
- file_name_as_directory (target, newdir, length);
+ file_name_as_directory (target, newdir, length, multibyte);
}
strcat (target, nm);
target[0] = '/';
target[1] = ':';
}
- dostounix_filename (target);
-#endif /* DOS_NT */
-
result = make_specified_string (target, -1, o - target, multibyte);
+ if (multibyte)
+ {
+ result = ENCODE_FILE (result);
+ dostounix_filename (SSDATA (result));
+ result = DECODE_FILE (result);
+ }
+ else
+ dostounix_filename (SSDATA (result));
+#else /* !DOS_NT */
+ result = make_specified_string (target, -1, o - target, multibyte);
+#endif /* !DOS_NT */
}
/* Again look to see if the file name has special constructs in it
{
char *nm, *s, *p, *o, *x, *endp;
char *target = NULL;
- int total = 0;
+ ptrdiff_t total = 0;
bool substituted = 0;
bool multibyte;
char *xnm;
memcpy (nm, SDATA (filename), SBYTES (filename) + 1);
#ifdef DOS_NT
- dostounix_filename (nm);
- substituted = (strcmp (nm, SDATA (filename)) != 0);
+ if (multibyte)
+ {
+ Lisp_Object encoded_filename = ENCODE_FILE (filename);
+ Lisp_Object tem_fn;
+
+ dostounix_filename (SDATA (encoded_filename));
+ tem_fn = DECODE_FILE (encoded_filename);
+ nm = alloca (SBYTES (tem_fn) + 1);
+ memcpy (nm, SDATA (tem_fn), SBYTES (tem_fn) + 1);
+ substituted = (memcmp (nm, SDATA (filename), SBYTES (filename)) != 0);
+ if (substituted)
+ filename = tem_fn;
+ }
+ else
+ {
+ dostounix_filename (nm);
+ substituted = (memcmp (nm, SDATA (filename), SBYTES (filename)) != 0);
+ }
#endif
endp = nm + SBYTES (filename);
If PRESERVE-UID-GID is non-nil, we try to transfer the
uid and gid of FILE to NEWNAME.
-If PRESERVE-SELINUX-CONTEXT is non-nil and SELinux is enabled
-on the system, we copy the SELinux context of FILE to NEWNAME. */)
- (Lisp_Object file, Lisp_Object newname, Lisp_Object ok_if_already_exists, Lisp_Object keep_time, Lisp_Object preserve_uid_gid, Lisp_Object preserve_selinux_context)
+If PRESERVE-EXTENDED-ATTRIBUTES is non-nil, we try to copy additional
+attributes of FILE to NEWNAME, such as its SELinux context and ACL
+entries (depending on how Emacs was built). */)
+ (Lisp_Object file, Lisp_Object newname, Lisp_Object ok_if_already_exists, Lisp_Object keep_time, Lisp_Object preserve_uid_gid, Lisp_Object preserve_extended_attributes)
{
int ifd, ofd;
int n;
Lisp_Object handler;
struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
ptrdiff_t count = SPECPDL_INDEX ();
- bool input_file_statable_p;
Lisp_Object encoded_file, encoded_newname;
#if HAVE_LIBSELINUX
security_context_t con;
int conlength = 0;
#endif
+#ifdef HAVE_POSIX_ACL
+ acl_t acl = NULL;
+#endif
encoded_file = encoded_newname = Qnil;
GCPRO4 (file, newname, encoded_file, encoded_newname);
if (!NILP (handler))
RETURN_UNGCPRO (call7 (handler, Qcopy_file, file, newname,
ok_if_already_exists, keep_time, preserve_uid_gid,
- preserve_selinux_context));
+ preserve_extended_attributes));
encoded_file = ENCODE_FILE (file);
encoded_newname = ENCODE_FILE (newname);
out_st.st_mode = 0;
#ifdef WINDOWSNT
+ if (!NILP (preserve_extended_attributes))
+ {
+#ifdef HAVE_POSIX_ACL
+ acl = acl_get_file (SDATA (encoded_file), ACL_TYPE_ACCESS);
+ if (acl == NULL && errno != ENOTSUP)
+ report_file_error ("Getting ACL", Fcons (file, Qnil));
+#endif
+ }
if (!CopyFile (SDATA (encoded_file),
SDATA (encoded_newname),
FALSE))
- report_file_error ("Copying file", Fcons (file, Fcons (newname, Qnil)));
+ {
+ /* CopyFile doesn't set errno when it fails. By far the most
+ "popular" reason is that the target is read-only. */
+ if (GetLastError () == 5)
+ errno = EACCES;
+ else
+ errno = EPERM;
+ report_file_error ("Copying file", Fcons (file, Fcons (newname, Qnil)));
+ }
/* CopyFile retains the timestamp by default. */
else if (NILP (keep_time))
{
/* Restore original attributes. */
SetFileAttributes (filename, attributes);
}
+#ifdef HAVE_POSIX_ACL
+ if (acl != NULL)
+ {
+ bool fail =
+ acl_set_file (SDATA (encoded_newname), ACL_TYPE_ACCESS, acl) != 0;
+ if (fail && errno != ENOTSUP)
+ report_file_error ("Setting ACL", Fcons (newname, Qnil));
+
+ acl_free (acl);
+ }
+#endif
#else /* not WINDOWSNT */
immediate_quit = 1;
ifd = emacs_open (SSDATA (encoded_file), O_RDONLY, 0);
record_unwind_protect (close_file_unwind, make_number (ifd));
- /* We can only copy regular files and symbolic links. Other files are not
- copyable by us. */
- input_file_statable_p = (fstat (ifd, &st) >= 0);
+ if (fstat (ifd, &st) != 0)
+ report_file_error ("Input file status", Fcons (file, Qnil));
-#if HAVE_LIBSELINUX
- if (!NILP (preserve_selinux_context) && is_selinux_enabled ())
+ if (!NILP (preserve_extended_attributes))
{
- conlength = fgetfilecon (ifd, &con);
- if (conlength == -1)
- report_file_error ("Doing fgetfilecon", Fcons (file, Qnil));
- }
+#if HAVE_LIBSELINUX
+ if (is_selinux_enabled ())
+ {
+ conlength = fgetfilecon (ifd, &con);
+ if (conlength == -1)
+ report_file_error ("Doing fgetfilecon", Fcons (file, Qnil));
+ }
#endif
+#ifdef HAVE_POSIX_ACL
+ acl = acl_get_fd (ifd);
+ if (acl == NULL && errno != ENOTSUP)
+ report_file_error ("Getting ACL", Fcons (file, Qnil));
+#endif
+ }
+
if (out_st.st_mode != 0
&& st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
{
Fcons (file, Fcons (newname, Qnil)));
}
- if (input_file_statable_p)
+ /* We can copy only regular files. */
+ if (!S_ISREG (st.st_mode))
{
- if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode)))
- {
-#if defined (EISDIR)
- /* Get a better looking error message. */
- errno = EISDIR;
-#endif /* EISDIR */
- report_file_error ("Non-regular file", Fcons (file, Qnil));
- }
+ /* Get a better looking error message. */
+ errno = S_ISDIR (st.st_mode) ? EISDIR : EINVAL;
+ report_file_error ("Non-regular file", Fcons (file, Qnil));
}
#ifdef MSDOS
S_IREAD | S_IWRITE);
#else /* not MSDOS */
{
- mode_t new_mask = 0666;
- if (input_file_statable_p)
- {
- if (!NILP (preserve_uid_gid))
- new_mask = 0600;
- new_mask &= st.st_mode;
- }
+ mode_t new_mask = !NILP (preserve_uid_gid) ? 0600 : 0666;
+ new_mask &= st.st_mode;
ofd = emacs_open (SSDATA (encoded_newname),
(O_WRONLY | O_TRUNC | O_CREAT
| (NILP (ok_if_already_exists) ? O_EXCL : 0)),
#ifndef MSDOS
/* Preserve the original file modes, and if requested, also its
owner and group. */
- if (input_file_statable_p)
- {
- mode_t mode_mask = 07777;
- if (!NILP (preserve_uid_gid))
- {
- /* Attempt to change owner and group. If that doesn't work
- attempt to change just the group, as that is sometimes allowed.
- Adjust the mode mask to eliminate setuid or setgid bits
- that are inappropriate if the owner and group are wrong. */
- if (fchown (ofd, st.st_uid, st.st_gid) != 0)
- {
- mode_mask &= ~06000;
- if (fchown (ofd, -1, st.st_gid) == 0)
- mode_mask |= 02000;
- }
- }
- if (fchmod (ofd, st.st_mode & mode_mask) != 0)
- report_file_error ("Doing chmod", Fcons (newname, Qnil));
- }
+ {
+ mode_t mode_mask = 07777;
+ if (!NILP (preserve_uid_gid))
+ {
+ /* Attempt to change owner and group. If that doesn't work
+ attempt to change just the group, as that is sometimes allowed.
+ Adjust the mode mask to eliminate setuid or setgid bits
+ that are inappropriate if the owner and group are wrong. */
+ if (fchown (ofd, st.st_uid, st.st_gid) != 0)
+ {
+ mode_mask &= ~06000;
+ if (fchown (ofd, -1, st.st_gid) == 0)
+ mode_mask |= 02000;
+ }
+ }
+ if (fchmod (ofd, st.st_mode & mode_mask) != 0)
+ report_file_error ("Doing chmod", Fcons (newname, Qnil));
+ }
#endif /* not MSDOS */
#if HAVE_LIBSELINUX
}
#endif
- if (input_file_statable_p)
+#ifdef HAVE_POSIX_ACL
+ if (acl != NULL)
{
- if (!NILP (keep_time))
- {
- EMACS_TIME atime = get_stat_atime (&st);
- EMACS_TIME mtime = get_stat_mtime (&st);
- if (set_file_times (ofd, SSDATA (encoded_newname), atime, mtime))
- xsignal2 (Qfile_date_error,
- build_string ("Cannot set file date"), newname);
- }
+ bool fail = acl_set_fd (ofd, acl) != 0;
+ if (fail && errno != ENOTSUP)
+ report_file_error ("Setting ACL", Fcons (newname, Qnil));
+
+ acl_free (acl);
+ }
+#endif
+
+ if (!NILP (keep_time))
+ {
+ EMACS_TIME atime = get_stat_atime (&st);
+ EMACS_TIME mtime = get_stat_mtime (&st);
+ if (set_file_times (ofd, SSDATA (encoded_newname), atime, mtime))
+ xsignal2 (Qfile_date_error,
+ build_string ("Cannot set file date"), newname);
}
if (emacs_close (ofd) < 0)
emacs_close (ifd);
#ifdef MSDOS
- if (input_file_statable_p)
- {
- /* In DJGPP v2.0 and later, fstat usually returns true file mode bits,
- and if it can't, it tells so. Otherwise, under MSDOS we usually
- get only the READ bit, which will make the copied file read-only,
- so it's better not to chmod at all. */
- if ((_djstat_flags & _STFAIL_WRITEBIT) == 0)
- chmod (SDATA (encoded_newname), st.st_mode & 07777);
- }
+ /* In DJGPP v2.0 and later, fstat usually returns true file mode bits,
+ and if it can't, it tells so. Otherwise, under MSDOS we usually
+ get only the READ bit, which will make the copied file read-only,
+ so it's better not to chmod at all. */
+ if ((_djstat_flags & _STFAIL_WRITEBIT) == 0)
+ chmod (SDATA (encoded_newname), st.st_mode & 07777);
#endif /* MSDOS */
#endif /* not WINDOWSNT */
return Qt;
}
-/* Delete file FILENAME.
+/* Delete file FILENAME, returning true if successful.
This ignores `delete-by-moving-to-trash'. */
-void
+bool
internal_delete_file (Lisp_Object filename)
{
- internal_condition_case_2 (Fdelete_file, filename, Qnil,
- Qt, internal_delete_file_1);
+ Lisp_Object tem;
+
+ tem = internal_condition_case_2 (Fdelete_file, filename, Qnil,
+ Qt, internal_delete_file_1);
+ return NILP (tem);
}
\f
DEFUN ("rename-file", Frename_file, Srename_file, 2, 3,
CONTEXT should be a list (USER ROLE TYPE RANGE), where the list
elements are strings naming the components of a SELinux context.
-This function does nothing if SELinux is disabled, or if Emacs was not
-compiled with SELinux support. */)
+Value is t if setting of SELinux context was successful, nil otherwise.
+
+This function does nothing and returns nil if SELinux is disabled,
+or if Emacs was not compiled with SELinux support. */)
(Lisp_Object filename, Lisp_Object context)
{
Lisp_Object absname;
context_free (parsed_con);
freecon (con);
+ return fail ? Qnil : Qt;
}
else
report_file_error ("Doing lgetfilecon", Fcons (absname, Qnil));
return Qnil;
}
\f
+DEFUN ("file-acl", Ffile_acl, Sfile_acl, 1, 1, 0,
+ doc: /* Return ACL entries of file named FILENAME.
+The entries are returned in a format suitable for use in `set-file-acl'
+but is otherwise undocumented and subject to change.
+Return nil if file does not exist or is not accessible, or if Emacs
+was unable to determine the ACL entries. */)
+ (Lisp_Object filename)
+{
+ Lisp_Object absname;
+ Lisp_Object handler;
+#ifdef HAVE_POSIX_ACL
+ acl_t acl;
+ Lisp_Object acl_string;
+ char *str;
+#endif
+
+ absname = expand_and_dir_to_file (filename,
+ BVAR (current_buffer, directory));
+
+ /* If the file name has special constructs in it,
+ call the corresponding file handler. */
+ handler = Ffind_file_name_handler (absname, Qfile_acl);
+ if (!NILP (handler))
+ return call2 (handler, Qfile_acl, absname);
+
+#ifdef HAVE_POSIX_ACL
+ absname = ENCODE_FILE (absname);
+
+ acl = acl_get_file (SSDATA (absname), ACL_TYPE_ACCESS);
+ if (acl == NULL)
+ return Qnil;
+
+ str = acl_to_text (acl, NULL);
+ if (str == NULL)
+ {
+ acl_free (acl);
+ return Qnil;
+ }
+
+ acl_string = build_string (str);
+ acl_free (str);
+ acl_free (acl);
+
+ return acl_string;
+#endif
+
+ return Qnil;
+}
+
+DEFUN ("set-file-acl", Fset_file_acl, Sset_file_acl,
+ 2, 2, 0,
+ doc: /* Set ACL of file named FILENAME to ACL-STRING.
+ACL-STRING should contain the textual representation of the ACL
+entries in a format suitable for the platform.
+
+Value is t if setting of ACL was successful, nil otherwise.
+
+Setting ACL for local files requires Emacs to be built with ACL
+support. */)
+ (Lisp_Object filename, Lisp_Object acl_string)
+{
+ Lisp_Object absname;
+ Lisp_Object handler;
+#ifdef HAVE_POSIX_ACL
+ Lisp_Object encoded_absname;
+ acl_t acl;
+ bool fail;
+#endif
+
+ absname = Fexpand_file_name (filename, BVAR (current_buffer, directory));
+
+ /* If the file name has special constructs in it,
+ call the corresponding file handler. */
+ handler = Ffind_file_name_handler (absname, Qset_file_acl);
+ if (!NILP (handler))
+ return call3 (handler, Qset_file_acl, absname, acl_string);
+
+#ifdef HAVE_POSIX_ACL
+ if (STRINGP (acl_string))
+ {
+ acl = acl_from_text (SSDATA (acl_string));
+ if (acl == NULL)
+ {
+ report_file_error ("Converting ACL", Fcons (absname, Qnil));
+ return Qnil;
+ }
+
+ encoded_absname = ENCODE_FILE (absname);
+
+ fail = (acl_set_file (SSDATA (encoded_absname), ACL_TYPE_ACCESS,
+ acl)
+ != 0);
+ if (fail && errno != ENOTSUP)
+ report_file_error ("Setting ACL", Fcons (absname, Qnil));
+
+ acl_free (acl);
+ return fail ? Qnil : Qt;
+ }
+#endif
+
+ return Qnil;
+}
+\f
DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0,
doc: /* Return mode bits of file named FILENAME, as an integer.
Return nil, if file does not exist or is not accessible. */)
return Qnil;
}
-
-/* Used to pass values from insert-file-contents to read_non_regular. */
-
-static int non_regular_fd;
-static ptrdiff_t non_regular_inserted;
-static int non_regular_nbytes;
-
-
-/* Read from a non-regular file.
- Read non_regular_nbytes bytes max from non_regular_fd.
- Non_regular_inserted specifies where to put the read bytes.
- Value is the number of bytes read. */
+/* Read from a non-regular file. STATE is a Lisp_Save_Value
+ object where slot 0 is the file descriptor, slot 1 specifies
+ an offset to put the read bytes, and slot 2 is the maximum
+ amount of bytes to read. Value is the number of bytes read. */
static Lisp_Object
-read_non_regular (Lisp_Object ignore)
+read_non_regular (Lisp_Object state)
{
int nbytes;
immediate_quit = 1;
QUIT;
- nbytes = emacs_read (non_regular_fd,
+ nbytes = emacs_read (XSAVE_INTEGER (state, 0),
((char *) BEG_ADDR + PT_BYTE - BEG_BYTE
- + non_regular_inserted),
- non_regular_nbytes);
+ + XSAVE_INTEGER (state, 1)),
+ XSAVE_INTEGER (state, 2));
immediate_quit = 0;
return make_number (nbytes);
}
This function does code conversion according to the value of
`coding-system-for-read' or `file-coding-system-alist', and sets the
-variable `last-coding-system-used' to the coding system actually used. */)
+variable `last-coding-system-used' to the coding system actually used.
+
+In addition, this function decodes the inserted text from known formats
+by calling `format-decode', which see. */)
(Lisp_Object filename, Lisp_Object visit, Lisp_Object beg, Lisp_Object end, Lisp_Object replace)
{
struct stat st;
else
{
nread = emacs_read (fd, read_buf, 1024);
- if (nread >= 0)
+ if (nread == 1024)
{
- if (lseek (fd, st.st_size - (1024 * 3), SEEK_SET) < 0)
+ int ntail;
+ if (lseek (fd, - (1024 * 3), SEEK_END) < 0)
report_file_error ("Setting file position",
Fcons (orig_filename, Qnil));
- nread += emacs_read (fd, read_buf + nread, 1024 * 3);
+ ntail = emacs_read (fd, read_buf + nread, 1024 * 3);
+ nread = ntail < 0 ? ntail : nread + ntail;
}
}
prepare_to_modify_buffer (GPT, GPT, NULL);
}
- move_gap (PT);
+ move_gap_both (PT, PT_BYTE);
if (GAP_SIZE < total)
make_gap (total - GAP_SIZE);
while (how_much < total)
{
/* try is reserved in some compilers (Microsoft C) */
- int trytry = min (total - how_much, READ_BUF_SIZE);
+ ptrdiff_t trytry = min (total - how_much, READ_BUF_SIZE);
ptrdiff_t this;
if (not_regular)
/* Read from the file, capturing `quit'. When an
error occurs, end the loop, and arrange for a quit
to be signaled after decoding the text we read. */
- non_regular_fd = fd;
- non_regular_inserted = inserted;
- non_regular_nbytes = trytry;
- nbytes = internal_condition_case_1 (read_non_regular,
- Qnil, Qerror,
- read_non_regular_quit);
+ nbytes = internal_condition_case_1
+ (read_non_regular,
+ make_save_value ("iii", (ptrdiff_t) fd, inserted, trytry),
+ Qerror, read_non_regular_quit);
+
if (NILP (nbytes))
{
read_quit = 1;
? get_stat_mtime (&st)
: time_error_value (errno));
if (EMACS_TIME_EQ (mtime, b->modtime)
- && (st.st_size == b->modtime_size
- || b->modtime_size < 0))
+ && (b->modtime_size < 0
+ || st.st_size == b->modtime_size))
return Qt;
return Qnil;
}
(void)
{
if (EMACS_NSECS (current_buffer->modtime) < 0)
- return make_number (0);
+ {
+ if (EMACS_NSECS (current_buffer->modtime) == NONEXISTENT_MODTIME_NSECS)
+ {
+ /* make_lisp_time won't work here if time_t is unsigned. */
+ return list4 (make_number (-1), make_number (65535),
+ make_number (0), make_number (0));
+ }
+ return make_number (0);
+ }
return make_lisp_time (current_buffer->modtime);
}
do_auto_save_unwind (Lisp_Object arg) /* used as unwind-protect function */
{
- FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer;
+ FILE *stream = XSAVE_POINTER (arg, 0);
auto_saving = 0;
if (stream != NULL)
{
}
record_unwind_protect (do_auto_save_unwind,
- make_save_value (stream, 0));
+ make_save_pointer (stream));
record_unwind_protect (do_auto_save_unwind_1,
make_number (minibuffer_auto_raise));
minibuffer_auto_raise = 0;
DEFSYM (Qset_file_times, "set-file-times");
DEFSYM (Qfile_selinux_context, "file-selinux-context");
DEFSYM (Qset_file_selinux_context, "set-file-selinux-context");
+ DEFSYM (Qfile_acl, "file-acl");
+ DEFSYM (Qset_file_acl, "set-file-acl");
DEFSYM (Qfile_newer_than_file_p, "file-newer-than-file-p");
DEFSYM (Qinsert_file_contents, "insert-file-contents");
DEFSYM (Qwrite_region, "write-region");
DEFVAR_LISP ("auto-save-list-file-name", Vauto_save_list_file_name,
doc: /* File name in which we write a list of all auto save file names.
This variable is initialized automatically from `auto-save-list-file-prefix'
-shortly after Emacs reads your `.emacs' file, if you have not yet given it
+shortly after Emacs reads your init file, if you have not yet given it
a non-nil value. */);
Vauto_save_list_file_name = Qnil;
defsubr (&Sset_file_modes);
defsubr (&Sset_file_times);
defsubr (&Sfile_selinux_context);
+ defsubr (&Sfile_acl);
+ defsubr (&Sset_file_acl);
defsubr (&Sset_file_selinux_context);
defsubr (&Sset_default_file_modes);
defsubr (&Sdefault_file_modes);
HCoop / bpt / emacs.git / blobdiff