#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;
/* 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. */
+ Return the length of DST in bytes. */
static ptrdiff_t
file_name_as_directory (char *dst, const char *src, ptrdiff_t srclen)
srclen++;
}
#ifdef DOS_NT
- dostounix_filename (dst);
+ {
+ 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);
+ }
#endif
return srclen;
}
\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. */
+ a terminating /. Return the length of DST in bytes. */
static ptrdiff_t
directory_file_name (char *dst, char *src, ptrdiff_t srclen)
srclen--;
}
#ifdef DOS_NT
- dostounix_filename (dst);
+ {
+ 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);
+ }
#endif
return srclen;
}
o [p - nm] = 0;
block_input ();
- pw = (struct passwd *) getpwnam (o + 1);
+ pw = getpwnam (o + 1);
unblock_input ();
if (pw)
{
{
char *nm, *s, *p, *o, *x, *endp;
char *target = NULL;
- int total = 0;
+ ptrdiff_t total = 0;
bool substituted = 0;
bool multibyte;
char *xnm;
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))
/* 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,
return Qnil;
}
\f
+DEFUN ("file-acl", Ffile_acl, Sfile_acl, 1, 1, 0,
+ doc: /* Return ACL entries of file named FILENAME, as a string.
+Return nil if file does not exist or is not accessible, or if Emacs
+was unable to determine the ACL entries. The latter can happen for
+local files if Emacs was not compiled with ACL support, or for remote
+files if the file handler returns nil for the file's 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.
+
+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);
+ }
+#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. */)
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);
? 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);
}
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