#include <config.h>
#include <limits.h>
#include <fcntl.h>
-#include <stdio.h>
+#include "sysstdio.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#ifdef WINDOWSNT
#define NOMINMAX 1
#include <windows.h>
-#include <fcntl.h>
#include <sys/file.h>
#include "w32.h"
#endif /* not WINDOWSNT */
#ifdef MSDOS
#include "msdos.h"
#include <sys/param.h>
-#include <fcntl.h>
#endif
#ifdef DOS_NT
/* Lisp function for recursively deleting directories. */
static Lisp_Object Qdelete_directory;
+static Lisp_Object Qsubstitute_env_in_file_name;
+
#ifdef WINDOWSNT
#endif
-Lisp_Object Qfile_error;
+Lisp_Object Qfile_error, Qfile_notify_error;
static Lisp_Object Qfile_already_exists, Qfile_date_error;
static Lisp_Object Qexcl;
Lisp_Object Qfile_name_history;
struct coding_system *);
\f
+/* Signal a file-access failure. STRING describes the failure,
+ NAME the file involved, and ERRORNO the errno value.
+
+ If NAME is neither null nor a pair, package it up as a singleton
+ list before reporting it; this saves report_file_errno's caller the
+ trouble of preserving errno before calling list1. */
+
void
-report_file_error (const char *string, Lisp_Object data)
+report_file_errno (char const *string, Lisp_Object name, int errorno)
{
+ Lisp_Object data = CONSP (name) || NILP (name) ? name : list1 (name);
Lisp_Object errstring;
- int errorno = errno;
char *str;
synchronize_system_messages_locale ();
}
}
-Lisp_Object
-close_file_unwind (Lisp_Object fd)
+/* Signal a file-access failure that set errno. STRING describes the
+ failure, NAME the file involved. When invoking this function, take
+ care to not use arguments such as build_string ("foo") that involve
+ side effects that may set errno. */
+
+void
+report_file_error (char const *string, Lisp_Object name)
{
- emacs_close (XFASTINT (fd));
- return Qnil;
+ report_file_errno (string, name, errno);
+}
+
+void
+close_file_unwind (int fd)
+{
+ emacs_close (fd);
+}
+
+void
+fclose_unwind (void *arg)
+{
+ FILE *stream = arg;
+ fclose (stream);
}
/* Restore point, having saved it as a marker. */
-Lisp_Object
+void
restore_point_unwind (Lisp_Object location)
{
Fgoto_char (location);
- Fset_marker (location, Qnil, Qnil);
- return Qnil;
+ unchain_marker (XMARKER (location));
}
\f
}
#ifdef DOS_NT
- beg = alloca (SBYTES (filename) + 1);
- memcpy (beg, SSDATA (filename), SBYTES (filename) + 1);
+ beg = xlispstrdupa (filename);
#else
beg = SSDATA (filename);
#endif
return Ffile_name_directory (filename);
}
+/* Maximum number of bytes that DST will be longer than SRC
+ in file_name_as_directory. This occurs when SRCLEN == 0. */
+enum { file_name_as_directory_slop = 2 };
+
/* 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
return 2;
}
- strcpy (dst, src);
-
+ memcpy (dst, src, srclen);
if (!IS_DIRECTORY_SEP (dst[srclen - 1]))
- {
- dst[srclen] = DIRECTORY_SEP;
- dst[srclen + 1] = '\0';
- srclen++;
- }
+ dst[srclen++] = DIRECTORY_SEP;
+ dst[srclen] = 0;
#ifdef DOS_NT
dostounix_filename (dst, multibyte);
#endif
{
char *buf;
ptrdiff_t length;
- Lisp_Object handler;
+ Lisp_Object handler, val;
+ USE_SAFE_ALLOCA;
CHECK_STRING (file);
if (NILP (file))
if (!NILP (Vw32_downcase_file_names))
file = Fdowncase (file);
#endif
- buf = alloca (SBYTES (file) + 10);
+ buf = SAFE_ALLOCA (SBYTES (file) + file_name_as_directory_slop + 1);
length = file_name_as_directory (buf, SSDATA (file), SBYTES (file),
STRING_MULTIBYTE (file));
- return make_specified_string (buf, -1, length, STRING_MULTIBYTE (file));
+ val = make_specified_string (buf, -1, length, STRING_MULTIBYTE (file));
+ SAFE_FREE ();
+ return val;
}
\f
/* Convert from directory name SRC of length SRCLEN to file name in
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 "". */
- strcpy (dst, src);
- if (srclen > 1
- && IS_DIRECTORY_SEP (dst[srclen - 1])
+ But leave "/" and "//" unchanged. */
+ while (srclen > 1
#ifdef DOS_NT
- && !IS_ANY_SEP (dst[srclen - 2])
+ && !IS_ANY_SEP (src[srclen - 2])
#endif
- )
- {
- dst[srclen - 1] = 0;
- srclen--;
- }
+ && IS_DIRECTORY_SEP (src[srclen - 1])
+ && ! (srclen == 2 && IS_DIRECTORY_SEP (src[0])))
+ srclen--;
+
+ memcpy (dst, src, srclen);
+ dst[srclen] = 0;
#ifdef DOS_NT
dostounix_filename (dst, multibyte);
#endif
{
char *buf;
ptrdiff_t length;
- Lisp_Object handler;
+ Lisp_Object handler, val;
+ USE_SAFE_ALLOCA;
CHECK_STRING (directory);
if (!NILP (Vw32_downcase_file_names))
directory = Fdowncase (directory);
#endif
- buf = alloca (SBYTES (directory) + 20);
+ buf = SAFE_ALLOCA (SBYTES (directory) + 1);
length = directory_file_name (buf, SSDATA (directory), SBYTES (directory),
STRING_MULTIBYTE (directory));
- return make_specified_string (buf, -1, length, STRING_MULTIBYTE (directory));
+ val = make_specified_string (buf, -1, length, STRING_MULTIBYTE (directory));
+ SAFE_FREE ();
+ return val;
}
static const char make_temp_name_tbl[64] =
dog-slow, but also useless since eventually nil would
have to be returned anyway. */
report_file_error ("Cannot create temporary name for prefix",
- Fcons (prefix, Qnil));
+ prefix);
/* not reached */
}
}
DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0,
doc: /* Convert filename NAME to absolute, and canonicalize it.
Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative
-\(does not start with slash or tilde); if DEFAULT-DIRECTORY is nil or missing,
-the current buffer's value of `default-directory' is used.
+\(does not start with slash or tilde); both the directory name and
+a directory's file name are accepted. If DEFAULT-DIRECTORY is nil or
+missing, the current buffer's value of `default-directory' is used.
NAME should be a string that is a valid file name for the underlying
filesystem.
File name components that are `.' are removed, and
Lisp_Object handler, result, handled_name;
bool multibyte;
Lisp_Object hdir;
+ USE_SAFE_ALLOCA;
CHECK_STRING (name);
#endif
/* Make a local copy of nm[] to protect it from GC in DECODE_FILE below. */
- nm = alloca (SBYTES (name) + 1);
- memcpy (nm, SSDATA (name), SBYTES (name) + 1);
+ nm = xlispstrdupa (name);
#ifdef DOS_NT
/* Note if special escape prefix is present, but remove for now. */
|| (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|| p[3] == 0))))
lose = 1;
- /* We want to replace multiple `/' in a row with a single
- slash. */
- else if (p > nm
- && IS_DIRECTORY_SEP (p[0])
- && IS_DIRECTORY_SEP (p[1]))
+ /* Replace multiple slashes with a single one, except
+ leave leading "//" alone. */
+ else if (IS_DIRECTORY_SEP (p[0])
+ && IS_DIRECTORY_SEP (p[1])
+ && (p != nm || IS_DIRECTORY_SEP (p[2])))
lose = 1;
p++;
}
else /* ~user/filename */
{
char *o, *p;
- for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++);
- o = alloca (p - nm + 1);
+ for (p = nm; *p && !IS_DIRECTORY_SEP (*p); p++)
+ continue;
+ o = SAFE_ALLOCA (p - nm + 1);
memcpy (o, nm, p - nm);
- o [p - nm] = 0;
+ o[p - nm] = 0;
block_input ();
pw = getpwnam (o + 1);
if (!IS_DIRECTORY_SEP (nm[0]))
{
ptrdiff_t newlen = strlen (newdir);
- char *tmp = alloca (newlen + strlen (nm) + 2);
+ char *tmp = alloca (newlen + file_name_as_directory_slop
+ + strlen (nm) + 1);
file_name_as_directory (tmp, newdir, newlen, multibyte);
strcat (tmp, nm);
nm = tmp;
if (newdir)
{
- /* Get rid of any slash at the end of newdir, unless newdir is
- just / or // (an incomplete UNC name). */
+ /* Ignore any slash at the end of newdir, unless newdir is
+ just "/" or "//". */
length = strlen (newdir);
- tlen = length + 1;
- if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1])
-#ifdef WINDOWSNT
- && !(length == 2 && IS_DIRECTORY_SEP (newdir[0]))
-#endif
- )
- {
- char *temp = alloca (length);
- memcpy (temp, newdir, length - 1);
- temp[length - 1] = 0;
- length--;
- newdir = temp;
- }
+ while (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1])
+ && ! (length == 2 && IS_DIRECTORY_SEP (newdir[0])))
+ length--;
}
else
- {
- length = 0;
- tlen = 0;
- }
+ length = 0;
/* Now concatenate the directory and name to new space in the stack frame. */
- tlen += strlen (nm) + 1;
+ tlen = length + file_name_as_directory_slop + strlen (nm) + 1;
#ifdef DOS_NT
/* Reserve space for drive specifier and escape prefix, since either
or both may need to be inserted. (The Microsoft x86 compiler
target = alloca (tlen + 4);
target += 4;
#else /* not DOS_NT */
- target = alloca (tlen);
+ target = SAFE_ALLOCA (tlen);
#endif /* not DOS_NT */
*target = 0;
if (!(drive && nm[0] && IS_DIRECTORY_SEP (newdir[0])
&& newdir[1] == '\0'))
#endif
- strcpy (target, newdir);
+ {
+ memcpy (target, newdir, length);
+ target[length] = 0;
+ }
}
else
file_name_as_directory (target, newdir, length, multibyte);
++o;
p += 3;
}
- else if (p > target && IS_DIRECTORY_SEP (p[1]))
- /* Collapse multiple `/' in a row. */
+ else if (IS_DIRECTORY_SEP (p[1])
+ && (p != target || IS_DIRECTORY_SEP (p[2])))
+ /* Collapse multiple "/", except leave leading "//" alone. */
p++;
else
{
{
handled_name = call3 (handler, Qexpand_file_name,
result, default_directory);
- if (STRINGP (handled_name))
- return handled_name;
- error ("Invalid handler in `file-name-handler-alist'");
+ if (! STRINGP (handled_name))
+ error ("Invalid handler in `file-name-handler-alist'");
+ result = handled_name;
}
+ SAFE_FREE ();
return result;
}
those `/' is discarded. */)
(Lisp_Object filename)
{
- char *nm, *s, *p, *o, *x, *endp;
- char *target = NULL;
- ptrdiff_t total = 0;
- bool substituted = 0;
+ char *nm, *p, *x, *endp;
+ bool substituted = false;
bool multibyte;
char *xnm;
Lisp_Object handler;
/* Always work on a copy of the string, in case GC happens during
decode of environment variables, causing the original Lisp_String
data to be relocated. */
- nm = alloca (SBYTES (filename) + 1);
- memcpy (nm, SDATA (filename), SBYTES (filename) + 1);
+ nm = xlispstrdupa (filename);
#ifdef DOS_NT
dostounix_filename (nm, multibyte);
return Fsubstitute_in_file_name
(make_specified_string (p, -1, endp - p, multibyte));
- /* See if any variables are substituted into the string
- and find the total length of their values in `total'. */
+ /* See if any variables are substituted into the string. */
- for (p = nm; p != endp;)
- if (*p != '$')
- p++;
- else
- {
- p++;
- if (p == endp)
- goto badsubst;
- else if (*p == '$')
- {
- /* "$$" means a single "$". */
- p++;
- total -= 1;
- substituted = 1;
- continue;
- }
- else if (*p == '{')
- {
- o = ++p;
- p = memchr (p, '}', endp - p);
- if (! p)
- goto missingclose;
- s = p;
- }
- else
- {
- o = p;
- while (p != endp && (c_isalnum (*p) || *p == '_')) p++;
- s = p;
- }
-
- /* Copy out the variable name. */
- target = alloca (s - o + 1);
- memcpy (target, o, s - o);
- target[s - o] = 0;
-#ifdef DOS_NT
- strupr (target); /* $home == $HOME etc. */
-#endif /* DOS_NT */
-
- /* Get variable value. */
- o = egetenv (target);
- if (o)
- {
- /* Don't try to guess a maximum length - UTF8 can use up to
- four bytes per character. This code is unlikely to run
- in a situation that requires performance, so decoding the
- env variables twice should be acceptable. Note that
- decoding may cause a garbage collect. */
- Lisp_Object orig, decoded;
- orig = build_unibyte_string (o);
- decoded = DECODE_FILE (orig);
- total += SBYTES (decoded);
- substituted = 1;
- }
- else if (*p == '}')
- goto badvar;
- }
+ if (!NILP (Ffboundp (Qsubstitute_env_in_file_name)))
+ {
+ Lisp_Object name
+ = (!substituted ? filename
+ : make_specified_string (nm, -1, endp - nm, multibyte));
+ Lisp_Object tmp = call1 (Qsubstitute_env_in_file_name, name);
+ CHECK_STRING (tmp);
+ if (!EQ (tmp, name))
+ substituted = true;
+ filename = tmp;
+ }
if (!substituted)
{
return filename;
}
- /* If substitution required, recopy the string and do it. */
- /* Make space in stack frame for the new copy. */
- xnm = alloca (SBYTES (filename) + total + 1);
- x = xnm;
-
- /* Copy the rest of the name through, replacing $ constructs with values. */
- for (p = nm; *p;)
- if (*p != '$')
- *x++ = *p++;
- else
- {
- p++;
- if (p == endp)
- goto badsubst;
- else if (*p == '$')
- {
- *x++ = *p++;
- continue;
- }
- else if (*p == '{')
- {
- o = ++p;
- p = memchr (p, '}', endp - p);
- if (! p)
- goto missingclose;
- s = p++;
- }
- else
- {
- o = p;
- while (p != endp && (c_isalnum (*p) || *p == '_')) p++;
- s = p;
- }
-
- /* Copy out the variable name. */
- target = alloca (s - o + 1);
- memcpy (target, o, s - o);
- target[s - o] = 0;
-
- /* Get variable value. */
- o = egetenv (target);
- if (!o)
- {
- *x++ = '$';
- strcpy (x, target); x+= strlen (target);
- }
- else
- {
- Lisp_Object orig, decoded;
- ptrdiff_t orig_length, decoded_length;
- orig_length = strlen (o);
- orig = make_unibyte_string (o, orig_length);
- decoded = DECODE_FILE (orig);
- decoded_length = SBYTES (decoded);
- memcpy (x, SDATA (decoded), decoded_length);
- x += decoded_length;
-
- /* If environment variable needed decoding, return value
- needs to be multibyte. */
- if (decoded_length != orig_length
- || memcmp (SDATA (decoded), o, orig_length))
- multibyte = 1;
- }
- }
-
- *x = 0;
-
+ xnm = SSDATA (filename);
+ x = xnm + SBYTES (filename);
+
/* If /~ or // appears, discard everything through first slash. */
while ((p = search_embedded_absfilename (xnm, x)) != NULL)
/* This time we do not start over because we've already expanded envvars
}
else
#endif
- return make_specified_string (xnm, -1, x - xnm, multibyte);
-
- badsubst:
- error ("Bad format environment-variable substitution");
- missingclose:
- error ("Missing \"}\" in environment-variable substitution");
- badvar:
- error ("Substituting nonexistent environment variable \"%s\"", target);
+ return (xnm == SSDATA (filename)
+ ? filename
+ : make_specified_string (xnm, -1, x - xnm, multibyte));
}
\f
/* A slightly faster and more convenient way to get
{
acl = acl_get_file (SDATA (encoded_file), ACL_TYPE_ACCESS);
if (acl == NULL && acl_errno_valid (errno))
- report_file_error ("Getting ACL", Fcons (file, Qnil));
+ report_file_error ("Getting ACL", file);
}
if (!CopyFile (SDATA (encoded_file),
SDATA (encoded_newname),
{
/* 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)));
+ report_file_errno ("Copying file", list2 (file, newname),
+ GetLastError () == 5 ? EACCES : EPERM);
}
/* CopyFile retains the timestamp by default. */
else if (NILP (keep_time))
{
- EMACS_TIME now;
+ struct timespec now;
DWORD attributes;
char * filename;
/* Ensure file is writable while its modified time is set. */
attributes = GetFileAttributes (filename);
SetFileAttributes (filename, attributes & ~FILE_ATTRIBUTE_READONLY);
- now = current_emacs_time ();
+ now = current_timespec ();
if (set_file_times (-1, filename, now, now))
{
/* Restore original attributes. */
bool fail =
acl_set_file (SDATA (encoded_newname), ACL_TYPE_ACCESS, acl) != 0;
if (fail && acl_errno_valid (errno))
- report_file_error ("Setting ACL", Fcons (newname, Qnil));
+ report_file_error ("Setting ACL", newname);
acl_free (acl);
}
immediate_quit = 0;
if (ifd < 0)
- report_file_error ("Opening input file", Fcons (file, Qnil));
+ report_file_error ("Opening input file", file);
- record_unwind_protect (close_file_unwind, make_number (ifd));
+ record_unwind_protect_int (close_file_unwind, ifd);
if (fstat (ifd, &st) != 0)
- report_file_error ("Input file status", Fcons (file, Qnil));
+ report_file_error ("Input file status", file);
if (!NILP (preserve_extended_attributes))
{
{
conlength = fgetfilecon (ifd, &con);
if (conlength == -1)
- report_file_error ("Doing fgetfilecon", Fcons (file, Qnil));
+ report_file_error ("Doing fgetfilecon", file);
}
#endif
}
if (out_st.st_mode != 0
&& st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
- {
- errno = 0;
- report_file_error ("Input and output files are the same",
- Fcons (file, Fcons (newname, Qnil)));
- }
+ report_file_errno ("Input and output files are the same",
+ list2 (file, newname), 0);
/* We can copy only regular files. */
if (!S_ISREG (st.st_mode))
- {
- /* Get a better looking error message. */
- errno = S_ISDIR (st.st_mode) ? EISDIR : EINVAL;
- report_file_error ("Non-regular file", Fcons (file, Qnil));
- }
+ report_file_errno ("Non-regular file", file,
+ S_ISDIR (st.st_mode) ? EISDIR : EINVAL);
-#ifdef MSDOS
- /* System's default file type was set to binary by _fmode in emacs.c. */
- ofd = emacs_open (SDATA (encoded_newname),
- O_WRONLY | O_TRUNC | O_CREAT
- | (NILP (ok_if_already_exists) ? O_EXCL : 0),
- S_IREAD | S_IWRITE);
-#else /* not MSDOS */
{
- mode_t new_mask = !NILP (preserve_uid_gid) ? 0600 : 0666;
- new_mask &= st.st_mode;
+#ifndef MSDOS
+ int new_mask = st.st_mode & (!NILP (preserve_uid_gid) ? 0600 : 0666);
+#else
+ int new_mask = S_IREAD | S_IWRITE;
+#endif
ofd = emacs_open (SSDATA (encoded_newname),
(O_WRONLY | O_TRUNC | O_CREAT
| (NILP (ok_if_already_exists) ? O_EXCL : 0)),
new_mask);
}
-#endif /* not MSDOS */
if (ofd < 0)
- report_file_error ("Opening output file", Fcons (newname, Qnil));
+ report_file_error ("Opening output file", newname);
- record_unwind_protect (close_file_unwind, make_number (ofd));
+ record_unwind_protect_int (close_file_unwind, ofd);
immediate_quit = 1;
QUIT;
while ((n = emacs_read (ifd, buf, sizeof buf)) > 0)
- if (emacs_write (ofd, buf, n) != n)
- report_file_error ("I/O error", Fcons (newname, Qnil));
+ if (emacs_write_sig (ofd, buf, n) != n)
+ report_file_error ("Write error", newname);
immediate_quit = 0;
#ifndef MSDOS
st.st_mode & mode_mask)
: fchmod (ofd, st.st_mode & mode_mask))
{
- case -2: report_file_error ("Copying permissions from", list1 (file));
- case -1: report_file_error ("Copying permissions to", list1 (newname));
+ case -2: report_file_error ("Copying permissions from", file);
+ case -1: report_file_error ("Copying permissions to", newname);
}
}
#endif /* not MSDOS */
bool fail = fsetfilecon (ofd, con) != 0;
/* See http://debbugs.gnu.org/11245 for ENOTSUP. */
if (fail && errno != ENOTSUP)
- report_file_error ("Doing fsetfilecon", Fcons (newname, Qnil));
+ report_file_error ("Doing fsetfilecon", newname);
freecon (con);
}
if (!NILP (keep_time))
{
- EMACS_TIME atime = get_stat_atime (&st);
- EMACS_TIME mtime = get_stat_mtime (&st);
+ struct timespec atime = get_stat_atime (&st);
+ struct timespec 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)
- report_file_error ("I/O error", Fcons (newname, Qnil));
+ report_file_error ("Write error", newname);
emacs_close (ifd);
#else
if (mkdir (dir, 0777 & ~auto_saving_dir_umask) != 0)
#endif
- report_file_error ("Creating directory", list1 (directory));
+ report_file_error ("Creating directory", directory);
return Qnil;
}
dir = SSDATA (encoded_dir);
if (rmdir (dir) != 0)
- report_file_error ("Removing directory", list1 (directory));
+ report_file_error ("Removing directory", directory);
return Qnil;
}
encoded_file = ENCODE_FILE (filename);
if (unlink (SSDATA (encoded_file)) < 0)
- report_file_error ("Removing old name", list1 (filename));
+ report_file_error ("Removing old name", filename);
return Qnil;
}
INTEGERP (ok_if_already_exists), 0, 0);
if (rename (SSDATA (encoded_file), SSDATA (encoded_newname)) < 0)
{
- if (errno == EXDEV)
+ int rename_errno = errno;
+ if (rename_errno == EXDEV)
{
ptrdiff_t count;
symlink_target = Ffile_symlink_p (file);
unbind_to (count, Qnil);
}
else
- report_file_error ("Renaming", list2 (file, newname));
+ report_file_errno ("Renaming", list2 (file, newname), rename_errno);
}
UNGCPRO;
return Qnil;
unlink (SSDATA (newname));
if (link (SSDATA (encoded_file), SSDATA (encoded_newname)) < 0)
- report_file_error ("Adding new name", list2 (file, newname));
+ {
+ int link_errno = errno;
+ report_file_errno ("Adding new name", list2 (file, newname), link_errno);
+ }
UNGCPRO;
return Qnil;
if (symlink (SSDATA (encoded_filename), SSDATA (encoded_linkname)) < 0)
{
/* If we didn't complain already, silently delete existing file. */
+ int symlink_errno;
if (errno == EEXIST)
{
unlink (SSDATA (encoded_linkname));
build_string ("Symbolic links are not supported"));
}
- report_file_error ("Making symbolic link", list2 (filename, linkname));
+ symlink_errno = errno;
+ report_file_errno ("Making symbolic link", list2 (filename, linkname),
+ symlink_errno);
}
UNGCPRO;
return Qnil;
call the corresponding file handler. */
handler = Ffind_file_name_handler (absname, Qfile_exists_p);
if (!NILP (handler))
- return call2 (handler, Qfile_exists_p, absname);
+ {
+ Lisp_Object result = call2 (handler, Qfile_exists_p, absname);
+ errno = 0;
+ return result;
+ }
absname = ENCODE_FILE (absname);
(Lisp_Object filename, Lisp_Object string)
{
Lisp_Object handler, encoded_filename, absname;
- int fd;
CHECK_STRING (filename);
absname = Fexpand_file_name (filename, Qnil);
encoded_filename = ENCODE_FILE (absname);
- fd = emacs_open (SSDATA (encoded_filename), O_RDONLY, 0);
- if (fd < 0)
- report_file_error (SSDATA (string), Fcons (filename, Qnil));
- emacs_close (fd);
+ if (faccessat (AT_FDCWD, SSDATA (encoded_filename), R_OK, AT_EACCESS) != 0)
+ report_file_error (SSDATA (string), filename);
return Qnil;
}
call the corresponding file handler. */
handler = Ffind_file_name_handler (absname, Qfile_accessible_directory_p);
if (!NILP (handler))
- return call2 (handler, Qfile_accessible_directory_p, absname);
+ {
+ Lisp_Object r = call2 (handler, Qfile_accessible_directory_p, absname);
+ errno = 0;
+ return r;
+ }
absname = ENCODE_FILE (absname);
return file_accessible_directory_p (SSDATA (absname)) ? Qt : Qnil;
!= 0);
/* See http://debbugs.gnu.org/11245 for ENOTSUP. */
if (fail && errno != ENOTSUP)
- report_file_error ("Doing lsetfilecon", Fcons (absname, Qnil));
+ report_file_error ("Doing lsetfilecon", absname);
context_free (parsed_con);
freecon (con);
return fail ? Qnil : Qt;
}
else
- report_file_error ("Doing lgetfilecon", Fcons (absname, Qnil));
+ report_file_error ("Doing lgetfilecon", absname);
}
#endif
acl = acl_from_text (SSDATA (acl_string));
if (acl == NULL)
{
- report_file_error ("Converting ACL", Fcons (absname, Qnil));
+ report_file_error ("Converting ACL", absname);
return Qnil;
}
acl)
!= 0);
if (fail && acl_errno_valid (errno))
- report_file_error ("Setting ACL", Fcons (absname, Qnil));
+ report_file_error ("Setting ACL", absname);
acl_free (acl);
return fail ? Qnil : Qt;
encoded_absname = ENCODE_FILE (absname);
if (chmod (SSDATA (encoded_absname), XINT (mode) & 07777) < 0)
- report_file_error ("Doing chmod", Fcons (absname, Qnil));
+ report_file_error ("Doing chmod", absname);
return Qnil;
}
{
Lisp_Object absname, encoded_absname;
Lisp_Object handler;
- EMACS_TIME t = lisp_time_argument (timestamp);
+ struct timespec t = lisp_time_argument (timestamp);
absname = Fexpand_file_name (filename, BVAR (current_buffer, directory));
if (file_directory_p (SSDATA (encoded_absname)))
return Qnil;
#endif
- report_file_error ("Setting file times", Fcons (absname, Qnil));
+ report_file_error ("Setting file times", absname);
}
}
if (stat (SSDATA (absname2), &st2) < 0)
return Qt;
- return (EMACS_TIME_GT (get_stat_mtime (&st1), get_stat_mtime (&st2))
+ return (timespec_cmp (get_stat_mtime (&st2), get_stat_mtime (&st1)) < 0
? Qt : Qnil);
}
\f
o remove all text properties.
o set back the buffer multibyteness. */
-static Lisp_Object
+static void
decide_coding_unwind (Lisp_Object unwind_data)
{
Lisp_Object multibyte, undo_list, buffer;
/* Now we are safe to change the buffer's multibyteness directly. */
bset_enable_multibyte_characters (current_buffer, multibyte);
bset_undo_list (current_buffer, undo_list);
-
- return Qnil;
}
/* Read from a non-regular file. STATE is a Lisp_Save_Value
}
/* Return a special time value indicating the error number ERRNUM. */
-static EMACS_TIME
+static struct timespec
time_error_value (int errnum)
{
int ns = (errnum == ENOENT || errnum == EACCES || errnum == ENOTDIR
? NONEXISTENT_MODTIME_NSECS
: UNKNOWN_MODTIME_NSECS);
- return make_emacs_time (0, ns);
+ return make_timespec (0, ns);
}
DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents,
(Lisp_Object filename, Lisp_Object visit, Lisp_Object beg, Lisp_Object end, Lisp_Object replace)
{
struct stat st;
- EMACS_TIME mtime;
+ struct timespec mtime;
int fd;
ptrdiff_t inserted = 0;
- bool nochange = 0;
ptrdiff_t how_much;
off_t beg_offset, end_offset;
int unprocessed;
bool set_coding_system = 0;
Lisp_Object coding_system;
bool read_quit = 0;
+ /* If the undo log only contains the insertion, there's no point
+ keeping it. It's typically when we first fill a file-buffer. */
+ bool empty_undo_list_p
+ = (!NILP (visit) && NILP (BVAR (current_buffer, undo_list))
+ && BEG == Z);
Lisp_Object old_Vdeactivate_mark = Vdeactivate_mark;
bool we_locked_file = 0;
- bool deferred_remove_unwind_protect = 0;
+ ptrdiff_t fd_index;
if (current_buffer->base_buffer && ! NILP (visit))
error ("Cannot do file visiting in an indirect buffer");
{
save_errno = errno;
if (NILP (visit))
- report_file_error ("Opening input file", Fcons (orig_filename, Qnil));
+ report_file_error ("Opening input file", orig_filename);
mtime = time_error_value (save_errno);
st.st_size = -1;
if (!NILP (Vcoding_system_for_read))
goto notfound;
}
+ fd_index = SPECPDL_INDEX ();
+ record_unwind_protect_int (close_file_unwind, fd);
+
/* Replacement should preserve point as it preserves markers. */
if (!NILP (replace))
record_unwind_protect (restore_point_unwind, Fpoint_marker ());
- record_unwind_protect (close_file_unwind, make_number (fd));
-
if (fstat (fd, &st) != 0)
- report_file_error ("Input file status", Fcons (orig_filename, Qnil));
+ report_file_error ("Input file status", orig_filename);
mtime = get_stat_mtime (&st);
/* This code will need to be changed in order to work on named
int ntail;
if (lseek (fd, - (1024 * 3), SEEK_END) < 0)
report_file_error ("Setting file position",
- Fcons (orig_filename, Qnil));
+ orig_filename);
ntail = emacs_read (fd, read_buf + nread, 1024 * 3);
nread = ntail < 0 ? ntail : nread + ntail;
}
}
if (nread < 0)
- error ("IO error reading %s: %s",
- SDATA (orig_filename), emacs_strerror (errno));
+ report_file_error ("Read error", orig_filename);
else if (nread > 0)
{
struct buffer *prev = current_buffer;
/* Rewind the file for the actual read done later. */
if (lseek (fd, 0, SEEK_SET) < 0)
- report_file_error ("Setting file position",
- Fcons (orig_filename, Qnil));
+ report_file_error ("Setting file position", orig_filename);
}
}
if (beg_offset != 0)
{
if (lseek (fd, beg_offset, SEEK_SET) < 0)
- report_file_error ("Setting file position",
- Fcons (orig_filename, Qnil));
+ report_file_error ("Setting file position", orig_filename);
}
immediate_quit = 1;
nread = emacs_read (fd, read_buf, sizeof read_buf);
if (nread < 0)
- error ("IO error reading %s: %s",
- SSDATA (orig_filename), emacs_strerror (errno));
+ report_file_error ("Read error", orig_filename);
else if (nread == 0)
break;
if (same_at_start - BEGV_BYTE == end_offset - beg_offset)
{
emacs_close (fd);
- specpdl_ptr--;
+ clear_unwind_protect (fd_index);
+
/* Truncate the buffer to the size of the file. */
del_range_1 (same_at_start, same_at_end, 0, 0);
goto handled;
/* How much can we scan in the next step? */
trial = min (curpos, sizeof read_buf);
if (lseek (fd, curpos - trial, SEEK_SET) < 0)
- report_file_error ("Setting file position",
- Fcons (orig_filename, Qnil));
+ report_file_error ("Setting file position", orig_filename);
total_read = nread = 0;
while (total_read < trial)
{
nread = emacs_read (fd, read_buf + total_read, trial - total_read);
if (nread < 0)
- error ("IO error reading %s: %s",
- SDATA (orig_filename), emacs_strerror (errno));
+ report_file_error ("Read error", orig_filename);
else if (nread == 0)
break;
total_read += nread;
CONVERSION_BUFFER. */
if (lseek (fd, beg_offset, SEEK_SET) < 0)
- report_file_error ("Setting file position",
- Fcons (orig_filename, Qnil));
+ report_file_error ("Setting file position", orig_filename);
inserted = 0; /* Bytes put into CONVERSION_BUFFER so far. */
unprocessed = 0; /* Bytes not processed in previous loop. */
memcpy (read_buf, coding.carryover, unprocessed);
}
UNGCPRO;
- emacs_close (fd);
-
- /* We should remove the unwind_protect calling
- close_file_unwind, but other stuff has been added the stack,
- so defer the removal till we reach the `handled' label. */
- deferred_remove_unwind_protect = 1;
-
if (this < 0)
- error ("IO error reading %s: %s",
- SDATA (orig_filename), emacs_strerror (errno));
+ report_file_error ("Read error", orig_filename);
+ emacs_close (fd);
+ clear_unwind_protect (fd_index);
if (unprocessed > 0)
{
if (bufpos == inserted)
{
/* Truncate the buffer to the size of the file. */
- if (same_at_start == same_at_end)
- nochange = 1;
- else
+ if (same_at_start != same_at_end)
del_range_byte (same_at_start, same_at_end, 0);
inserted = 0;
{
del_range_byte (same_at_start, same_at_end, 0);
temp = GPT;
+ eassert (same_at_start == GPT_BYTE);
same_at_start = GPT_BYTE;
}
else
= buf_bytepos_to_charpos (XBUFFER (conversion_buffer),
same_at_start - BEGV_BYTE
+ BUF_BEG_BYTE (XBUFFER (conversion_buffer)));
+ eassert (same_at_start_charpos == temp - (BEGV - BEG));
inserted_chars
= (buf_bytepos_to_charpos (XBUFFER (conversion_buffer),
same_at_start + inserted - BEGV_BYTE
if (beg_offset != 0 || !NILP (replace))
{
if (lseek (fd, beg_offset, SEEK_SET) < 0)
- report_file_error ("Setting file position",
- Fcons (orig_filename, Qnil));
+ report_file_error ("Setting file position", orig_filename);
}
/* In the following loop, HOW_MUCH contains the total bytes read so
to be signaled after decoding the text we read. */
nbytes = internal_condition_case_1
(read_non_regular,
- make_save_value (SAVE_TYPE_INT_INT_INT, (ptrdiff_t) fd,
- inserted, trytry),
+ make_save_int_int_int (fd, inserted, trytry),
Qerror, read_non_regular_quit);
if (NILP (nbytes))
Vdeactivate_mark = Qt;
emacs_close (fd);
-
- /* Discard the unwind protect for closing the file. */
- specpdl_ptr--;
+ clear_unwind_protect (fd_index);
if (how_much < 0)
- error ("IO error reading %s: %s",
- SDATA (orig_filename), emacs_strerror (errno));
+ report_file_error ("Read error", orig_filename);
/* Make the text read part of the buffer. */
GAP_SIZE -= inserted;
handled:
- if (deferred_remove_unwind_protect)
- /* If requested above, discard the unwind protect for closing the
- file. */
- specpdl_ptr--;
-
if (!NILP (visit))
{
- if (!EQ (BVAR (current_buffer, undo_list), Qt) && !nochange)
+ if (empty_undo_list_p)
bset_undo_list (current_buffer, Qnil);
if (NILP (handler))
p = XCDR (p);
}
- if (NILP (visit))
+ if (!empty_undo_list_p)
{
bset_undo_list (current_buffer, old_undo);
if (CONSP (old_undo) && inserted != old_inserted)
}
if (!NILP (visit)
- && EMACS_NSECS (current_buffer->modtime) == NONEXISTENT_MODTIME_NSECS)
+ && current_buffer->modtime.tv_nsec == NONEXISTENT_MODTIME_NSECS)
{
/* If visiting nonexistent file, return nil. */
- errno = save_errno;
- report_file_error ("Opening input file", Fcons (orig_filename, Qnil));
+ report_file_errno ("Opening input file", orig_filename, save_errno);
}
if (read_quit)
\f
static Lisp_Object build_annotations (Lisp_Object, Lisp_Object);
-static Lisp_Object
+static void
build_annotations_unwind (Lisp_Object arg)
{
Vwrite_region_annotation_buffers = arg;
- return Qnil;
}
/* Decide the coding-system to encode the data with. */
&& !NILP (Ffboundp (Vselect_safe_coding_system_function)))
/* Confirm that VAL can surely encode the current region. */
val = call5 (Vselect_safe_coding_system_function,
- start, end, Fcons (Qt, Fcons (val, Qnil)),
+ start, end, list2 (Qt, val),
Qnil, filename);
}
else
This calls `write-region-annotate-functions' at the start, and
`write-region-post-annotation-function' at the end. */)
- (Lisp_Object start, Lisp_Object end, Lisp_Object filename, Lisp_Object append, Lisp_Object visit, Lisp_Object lockname, Lisp_Object mustbenew)
+ (Lisp_Object start, Lisp_Object end, Lisp_Object filename, Lisp_Object append,
+ Lisp_Object visit, Lisp_Object lockname, Lisp_Object mustbenew)
+{
+ return write_region (start, end, filename, append, visit, lockname, mustbenew,
+ -1);
+}
+
+/* Like Fwrite_region, except that if DESC is nonnegative, it is a file
+ descriptor for FILENAME, so do not open or close FILENAME. */
+
+Lisp_Object
+write_region (Lisp_Object start, Lisp_Object end, Lisp_Object filename,
+ Lisp_Object append, Lisp_Object visit, Lisp_Object lockname,
+ Lisp_Object mustbenew, int desc)
{
- int desc;
int open_flags;
int mode;
off_t offset IF_LINT (= 0);
+ bool open_and_close_file = desc < 0;
bool ok;
int save_errno = 0;
const char *fn;
struct stat st;
- EMACS_TIME modtime;
+ struct timespec modtime;
ptrdiff_t count = SPECPDL_INDEX ();
- int count1;
+ ptrdiff_t count1 IF_LINT (= 0);
Lisp_Object handler;
Lisp_Object visit_file;
Lisp_Object annotations;
Lisp_Object encoded_filename;
bool visiting = (EQ (visit, Qt) || STRINGP (visit));
bool quietly = !NILP (visit);
+ bool file_locked = 0;
struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
struct buffer *given_buffer;
struct coding_system coding;
record_unwind_protect (build_annotations_unwind,
Vwrite_region_annotation_buffers);
- Vwrite_region_annotation_buffers = Fcons (Fcurrent_buffer (), Qnil);
- count1 = SPECPDL_INDEX ();
+ Vwrite_region_annotation_buffers = list1 (Fcurrent_buffer ());
given_buffer = current_buffer;
coding.mode |= CODING_MODE_SELECTIVE_DISPLAY;
#ifdef CLASH_DETECTION
- if (!auto_saving)
- lock_file (lockname);
+ if (open_and_close_file && !auto_saving)
+ {
+ lock_file (lockname);
+ file_locked = 1;
+ }
#endif /* CLASH_DETECTION */
encoded_filename = ENCODE_FILE (filename);
mode = auto_saving ? auto_save_mode_bits : 0666;
#endif
- desc = emacs_open (fn, open_flags, mode);
-
- if (desc < 0)
+ if (open_and_close_file)
{
+ desc = emacs_open (fn, open_flags, mode);
+ if (desc < 0)
+ {
+ int open_errno = errno;
#ifdef CLASH_DETECTION
- save_errno = errno;
- if (!auto_saving) unlock_file (lockname);
- errno = save_errno;
+ if (file_locked)
+ unlock_file (lockname);
#endif /* CLASH_DETECTION */
- UNGCPRO;
- report_file_error ("Opening output file", Fcons (filename, Qnil));
- }
+ UNGCPRO;
+ report_file_errno ("Opening output file", filename, open_errno);
+ }
- record_unwind_protect (close_file_unwind, make_number (desc));
+ count1 = SPECPDL_INDEX ();
+ record_unwind_protect_int (close_file_unwind, desc);
+ }
if (NUMBERP (append))
{
off_t ret = lseek (desc, offset, SEEK_SET);
if (ret < 0)
{
+ int lseek_errno = errno;
#ifdef CLASH_DETECTION
- save_errno = errno;
- if (!auto_saving) unlock_file (lockname);
- errno = save_errno;
+ if (file_locked)
+ unlock_file (lockname);
#endif /* CLASH_DETECTION */
UNGCPRO;
- report_file_error ("Lseek error", Fcons (filename, Qnil));
+ report_file_errno ("Lseek error", filename, lseek_errno);
}
}
immediate_quit = 0;
- /* fsync is not crucial for auto-save files, since they might lose
- some work anyway. */
- if (!auto_saving && !write_region_inhibit_fsync)
+ /* fsync is not crucial for temporary files. Nor for auto-save
+ files, since they might lose some work anyway. */
+ if (open_and_close_file && !auto_saving && !write_region_inhibit_fsync)
{
/* Transfer data and metadata to disk, retrying if interrupted.
fsync can report a write failure here, e.g., due to disk full
}
}
- modtime = invalid_emacs_time ();
+ modtime = invalid_timespec ();
if (visiting)
{
if (fstat (desc, &st) == 0)
ok = 0, save_errno = errno;
}
- /* NFS can report a write failure now. */
- if (emacs_close (desc) < 0)
- ok = 0, save_errno = errno;
+ if (open_and_close_file)
+ {
+ /* NFS can report a write failure now. */
+ if (emacs_close (desc) < 0)
+ ok = 0, save_errno = errno;
- /* Discard the unwind protect for close_file_unwind. */
- specpdl_ptr = specpdl + count1;
+ /* Discard the unwind protect for close_file_unwind. */
+ specpdl_ptr = specpdl + count1;
+ }
/* Some file systems have a bug where st_mtime is not updated
properly after a write. For example, CIFS might not see the
unlikely and a similar race between the last write and the fstat
above cannot possibly be closed anyway. */
- if (EMACS_TIME_VALID_P (modtime)
+ if (timespec_valid_p (modtime)
&& ! (valid_timestamp_file_system && st.st_dev == timestamp_file_system))
{
int desc1 = emacs_open (fn, O_WRONLY | O_BINARY, 0);
bool use_heuristic
= ((open_flags & (O_EXCL | O_TRUNC)) != 0
&& st.st_size != 0
- && EMACS_NSECS (modtime) % 100 != 0);
+ && modtime.tv_nsec % 100 != 0);
- EMACS_TIME modtime1 = get_stat_mtime (&st1);
+ struct timespec modtime1 = get_stat_mtime (&st1);
if (use_heuristic
- && EMACS_TIME_EQ (modtime, modtime1)
+ && timespec_cmp (modtime, modtime1) == 0
&& st.st_size == st1.st_size)
{
timestamp_file_system = st.st_dev;
unbind_to (count, Qnil);
#ifdef CLASH_DETECTION
- if (!auto_saving)
+ if (file_locked)
unlock_file (lockname);
#endif /* CLASH_DETECTION */
/* Do this before reporting IO error
to avoid a "file has changed on disk" warning on
next attempt to save. */
- if (EMACS_TIME_VALID_P (modtime))
+ if (timespec_valid_p (modtime))
{
current_buffer->modtime = modtime;
current_buffer->modtime_size = st.st_size;
}
if (! ok)
- error ("IO error writing %s: %s", SDATA (filename),
- emacs_strerror (save_errno));
+ report_file_errno ("Write error", filename, save_errno);
if (visiting)
{
return Qnil;
}
\f
-Lisp_Object merge (Lisp_Object, Lisp_Object, Lisp_Object);
-
DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0,
doc: /* Return t if (car A) is numerically less than (car B). */)
(Lisp_Object a, Lisp_Object b)
{
- return Flss (Fcar (a), Fcar (b));
+ Lisp_Object args[2] = { Fcar (a), Fcar (b), };
+ return Flss (2, args);
}
/* Build the complete list of annotations appropriate for writing out
return 1;
}
+/* Maximum number of characters that the next
+ function encodes per one loop iteration. */
+
+enum { E_WRITE_MAX = 8 * 1024 * 1024 };
/* Write text in the range START and END into descriptor DESC,
encoding them with coding system CODING. If STRING is nil, START
coding->src_multibyte = SCHARS (string) < SBYTES (string);
if (CODING_REQUIRE_ENCODING (coding))
{
- encode_coding_object (coding, string,
- start, string_char_to_byte (string, start),
- end, string_char_to_byte (string, end), Qt);
+ ptrdiff_t nchars = min (end - start, E_WRITE_MAX);
+
+ /* Avoid creating huge Lisp string in encode_coding_object. */
+ if (nchars == E_WRITE_MAX)
+ coding->raw_destination = 1;
+
+ encode_coding_object
+ (coding, string, start, string_char_to_byte (string, start),
+ start + nchars, string_char_to_byte (string, start + nchars),
+ Qt);
}
else
{
coding->src_multibyte = (end - start) < (end_byte - start_byte);
if (CODING_REQUIRE_ENCODING (coding))
{
- encode_coding_object (coding, Fcurrent_buffer (),
- start, start_byte, end, end_byte, Qt);
+ ptrdiff_t nchars = min (end - start, E_WRITE_MAX);
+
+ /* Likewise. */
+ if (nchars == E_WRITE_MAX)
+ coding->raw_destination = 1;
+
+ encode_coding_object
+ (coding, Fcurrent_buffer (), start, start_byte,
+ start + nchars, CHAR_TO_BYTE (start + nchars), Qt);
}
else
{
if (coding->produced > 0)
{
- coding->produced
- -= emacs_write (desc,
- STRINGP (coding->dst_object)
- ? SSDATA (coding->dst_object)
- : (char *) BYTE_POS_ADDR (coding->dst_pos_byte),
- coding->produced);
+ char *buf = (coding->raw_destination ? (char *) coding->destination
+ : (STRINGP (coding->dst_object)
+ ? SSDATA (coding->dst_object)
+ : (char *) BYTE_POS_ADDR (coding->dst_pos_byte)));
+ coding->produced -= emacs_write_sig (desc, buf, coding->produced);
+ if (coding->raw_destination)
+ {
+ /* We're responsible for freeing this, see
+ encode_coding_object to check why. */
+ xfree (coding->destination);
+ coding->raw_destination = 0;
+ }
if (coding->produced)
return 0;
}
struct stat st;
Lisp_Object handler;
Lisp_Object filename;
- EMACS_TIME mtime;
+ struct timespec mtime;
if (NILP (buf))
b = current_buffer;
}
if (!STRINGP (BVAR (b, filename))) return Qt;
- if (EMACS_NSECS (b->modtime) == UNKNOWN_MODTIME_NSECS) return Qt;
+ if (b->modtime.tv_nsec == UNKNOWN_MODTIME_NSECS) return Qt;
/* If the file name has special constructs in it,
call the corresponding file handler. */
mtime = (stat (SSDATA (filename), &st) == 0
? get_stat_mtime (&st)
: time_error_value (errno));
- if (EMACS_TIME_EQ (mtime, b->modtime)
+ if (timespec_cmp (mtime, b->modtime) == 0
&& (b->modtime_size < 0
|| st.st_size == b->modtime_size))
return Qt;
return Qnil;
}
-DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime,
- Sclear_visited_file_modtime, 0, 0, 0,
- doc: /* Clear out records of last mod time of visited file.
-Next attempt to save will certainly not complain of a discrepancy. */)
- (void)
-{
- current_buffer->modtime = make_emacs_time (0, UNKNOWN_MODTIME_NSECS);
- current_buffer->modtime_size = -1;
- return Qnil;
-}
-
DEFUN ("visited-file-modtime", Fvisited_file_modtime,
Svisited_file_modtime, 0, 0, 0,
doc: /* Return the current buffer's recorded visited file modification time.
The value is a list of the form (HIGH LOW USEC PSEC), like the time values that
`file-attributes' returns. If the current buffer has no recorded file
modification time, this function returns 0. If the visited file
-doesn't exist, HIGH will be -1.
+doesn't exist, return -1.
See Info node `(elisp)Modification Time' for more details. */)
(void)
{
- if (EMACS_NSECS (current_buffer->modtime) < 0)
- {
- if (EMACS_NSECS (current_buffer->modtime) == NONEXISTENT_MODTIME_NSECS)
- {
- /* make_lisp_time won't work here if time_t is unsigned. */
- return list4i (-1, 65535, 0, 0);
- }
- return make_number (0);
- }
+ int ns = current_buffer->modtime.tv_nsec;
+ if (ns < 0)
+ return make_number (UNKNOWN_MODTIME_NSECS - ns);
return make_lisp_time (current_buffer->modtime);
}
or if the file itself has been changed for some known benign reason.
An argument specifies the modification time value to use
\(instead of that of the visited file), in the form of a list
-\(HIGH LOW USEC PSEC) as returned by `current-time'. */)
- (Lisp_Object time_list)
+\(HIGH LOW USEC PSEC) or an integer flag as returned by
+`visited-file-modtime'. */)
+ (Lisp_Object time_flag)
{
- if (!NILP (time_list))
+ if (!NILP (time_flag))
{
- current_buffer->modtime = lisp_time_argument (time_list);
+ struct timespec mtime;
+ if (INTEGERP (time_flag))
+ {
+ CHECK_RANGED_INTEGER (time_flag, -1, 0);
+ mtime = make_timespec (0, UNKNOWN_MODTIME_NSECS - XINT (time_flag));
+ }
+ else
+ mtime = lisp_time_argument (time_flag);
+
+ current_buffer->modtime = mtime;
current_buffer->modtime_size = -1;
}
else
Qnil, Qnil);
}
-static Lisp_Object
-do_auto_save_unwind (Lisp_Object arg) /* used as unwind-protect function */
+struct auto_save_unwind
+{
+ FILE *stream;
+ bool auto_raise;
+};
+static void
+do_auto_save_unwind (void *arg)
{
- FILE *stream = XSAVE_POINTER (arg, 0);
+ struct auto_save_unwind *p = arg;
+ FILE *stream = p->stream;
+ minibuffer_auto_raise = p->auto_raise;
auto_saving = 0;
if (stream != NULL)
{
fclose (stream);
unblock_input ();
}
- return Qnil;
-}
-
-static Lisp_Object
-do_auto_save_unwind_1 (Lisp_Object value) /* used as unwind-protect function */
-
-{
- minibuffer_auto_raise = XINT (value);
- return Qnil;
}
static Lisp_Object
ptrdiff_t count = SPECPDL_INDEX ();
bool orig_minibuffer_auto_raise = minibuffer_auto_raise;
bool old_message_p = 0;
+ struct auto_save_unwind auto_save_unwind;
struct gcpro gcpro1, gcpro2;
if (max_specpdl_size < specpdl_size + 40)
if (NILP (no_message))
{
old_message_p = push_message ();
- record_unwind_protect (pop_message_unwind, Qnil);
+ record_unwind_protect_void (pop_message_unwind);
}
/* Ordinarily don't quit within this function,
point to non-strings reached from Vbuffer_alist. */
hook = intern ("auto-save-hook");
- Frun_hooks (1, &hook);
+ safe_run_hooks (hook);
if (STRINGP (Vauto_save_list_file_name))
{
UNGCPRO;
}
- stream = fopen (SSDATA (listfile), "w");
+ stream = emacs_fopen (SSDATA (listfile), "w");
}
- record_unwind_protect (do_auto_save_unwind,
- make_save_pointer (stream));
- record_unwind_protect (do_auto_save_unwind_1,
- make_number (minibuffer_auto_raise));
+ auto_save_unwind.stream = stream;
+ auto_save_unwind.auto_raise = minibuffer_auto_raise;
+ record_unwind_protect_ptr (do_auto_save_unwind, &auto_save_unwind);
minibuffer_auto_raise = 0;
auto_saving = 1;
auto_save_error_occurred = 0;
couldn't handle some ange-ftp'd file. */
for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
- for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail))
+ FOR_EACH_LIVE_BUFFER (tail, buf)
{
- buf = XCDR (XCAR (tail));
b = XBUFFER (buf);
/* Record all the buffers that have auto save mode
|| NILP (Ffind_file_name_handler (BVAR (b, auto_save_file_name),
Qwrite_region))))
{
- EMACS_TIME before_time = current_emacs_time ();
- EMACS_TIME after_time;
+ struct timespec before_time = current_timespec ();
+ struct timespec after_time;
/* If we had a failure, don't try again for 20 minutes. */
if (b->auto_save_failure_time > 0
- && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200)
+ && before_time.tv_sec - b->auto_save_failure_time < 1200)
continue;
set_buffer_internal (b);
XSETFASTINT (BVAR (current_buffer, save_length), Z - BEG);
set_buffer_internal (old);
- after_time = current_emacs_time ();
+ after_time = current_timespec ();
/* If auto-save took more than 60 seconds,
assume it was an NFS failure that got a timeout. */
- if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
- b->auto_save_failure_time = EMACS_SECS (after_time);
+ if (after_time.tv_sec - before_time.tv_sec > 60)
+ b->auto_save_failure_time = after_time.tv_sec;
}
}
DEFSYM (Qfile_error, "file-error");
DEFSYM (Qfile_already_exists, "file-already-exists");
DEFSYM (Qfile_date_error, "file-date-error");
+ DEFSYM (Qfile_notify_error, "file-notify-error");
DEFSYM (Qexcl, "excl");
DEFVAR_LISP ("file-name-coding-system", Vfile_name_coding_system,
Fput (Qfile_date_error, Qerror_message,
build_pure_c_string ("Cannot set file date"));
+ Fput (Qfile_notify_error, Qerror_conditions,
+ Fpurecopy (list3 (Qfile_notify_error, Qfile_error, Qerror)));
+ Fput (Qfile_notify_error, Qerror_message,
+ build_pure_c_string ("File notification error"));
+
DEFVAR_LISP ("file-name-handler-alist", Vfile_name_handler_alist,
doc: /* Alist of elements (REGEXP . HANDLER) for file names handled specially.
If a file name matches REGEXP, all I/O on that file is done by calling
DEFSYM (Qmove_file_to_trash, "move-file-to-trash");
DEFSYM (Qcopy_directory, "copy-directory");
DEFSYM (Qdelete_directory, "delete-directory");
+ DEFSYM (Qsubstitute_env_in_file_name, "substitute-env-in-file-name");
defsubr (&Sfind_file_name_handler);
defsubr (&Sfile_name_directory);
defsubr (&Swrite_region);
defsubr (&Scar_less_than_car);
defsubr (&Sverify_visited_file_modtime);
- defsubr (&Sclear_visited_file_modtime);
defsubr (&Svisited_file_modtime);
defsubr (&Sset_visited_file_modtime);
defsubr (&Sdo_auto_save);
HCoop / bpt / emacs.git / blobdiff