/* histfile.c - functions to manipulate the history file. */
-/* Copyright (C) 1989-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1989-2018 Free Software Foundation, Inc.
This file contains the GNU History Library (History), a set of
routines for managing the text of previously typed lines.
filename. This only matters when you don't specify the
filename to read_history (), or write_history (). */
static char *
-history_filename (filename)
- const char *filename;
+history_filename (const char *filename)
{
char *return_val;
const char *home;
}
static char *
-history_backupfile (filename)
- const char *filename;
+history_backupfile (const char *filename)
{
const char *fn;
char *ret, linkbuf[PATH_MAX+1];
}
static char *
-history_tempfile (filename)
- const char *filename;
+history_tempfile (const char *filename)
{
const char *fn;
char *ret, linkbuf[PATH_MAX+1];
If FILENAME is NULL, then read from ~/.history. Returns 0 if
successful, or errno if not. */
int
-read_history (filename)
- const char *filename;
+read_history (const char *filename)
{
return (read_history_range (filename, 0, -1));
}
until the end of the file. If FILENAME is NULL, then read from
~/.history. Returns 0 if successful, or errno if not. */
int
-read_history_range (filename, from, to)
- const char *filename;
- int from, to;
+read_history_range (const char *filename, int from, int to)
{
register char *line_start, *line_end, *p;
char *input, *buffer, *bufend, *last_ts;
if ((file < 0) || (fstat (file, &finfo) == -1))
goto error_and_exit;
+ if (S_ISREG (finfo.st_mode) == 0)
+ {
+#ifdef EFTYPE
+ errno = EFTYPE;
+#else
+ errno = EINVAL;
+#endif
+ goto error_and_exit;
+ }
+
file_size = (size_t)finfo.st_size;
/* check for overflow on very large files */
goto error_and_exit;
}
+ if (file_size == 0)
+ {
+ free (input);
+ return 0; /* don't waste time if we don't have to */
+ }
+
#ifdef HISTORY_USE_MMAP
/* We map read/write and private so we can change newlines to NULs without
affecting the underlying object. */
/* Start at beginning of file, work to end. */
bufend = buffer + chars_read;
+ *bufend = '\0'; /* null-terminate buffer for timestamp checks */
current_line = 0;
/* Heuristic: the history comment character rarely changes, so assume we
{
if (HIST_TIMESTAMP_START(line_start) == 0)
{
- if (last_ts == NULL && history_multiline_entries)
+ if (last_ts == NULL && history_length > 0 && history_multiline_entries)
_hs_append_history_line (history_length - 1, line_start);
else
add_history (line_start);
/* Save FILENAME to BACK, handling case where FILENAME is a symlink
(e.g., ~/.bash_history -> .histfiles/.bash_history.$HOSTNAME) */
static int
-histfile_backup (filename, back)
- const char *filename;
- const char *back;
+histfile_backup (const char *filename, const char *back)
{
#if defined (HAVE_READLINK)
char linkbuf[PATH_MAX+1];
/* Restore ORIG from BACKUP handling case where ORIG is a symlink
(e.g., ~/.bash_history -> .histfiles/.bash_history.$HOSTNAME) */
static int
-histfile_restore (backup, orig)
- const char *backup;
- const char *orig;
+histfile_restore (const char *backup, const char *orig)
{
#if defined (HAVE_READLINK)
char linkbuf[PATH_MAX+1];
If FNAME is NULL, then use ~/.history. Writes a new file and renames
it to the original name. Returns 0 on success, errno on failure. */
int
-history_truncate_file (fname, lines)
- const char *fname;
- int lines;
+history_truncate_file (const char *fname, int lines)
{
char *buffer, *filename, *tempname, *bp, *bp1; /* bp1 == bp+1 */
int file, chars_read, rv, orig_lines, exists, r;
history_lines_written_to_file = 0;
}
+#if defined (HAVE_CHOWN)
/* Make sure the new filename is owned by the same user as the old. If one
user is running this, it's a no-op. If the shell is running after sudo
with a shared history file, we don't want to leave the history file
owned by root. */
if (rv == 0 && exists)
r = chown (filename, finfo.st_uid, finfo.st_gid);
+#endif
xfree (filename);
FREE (tempname);
from the history list to FILENAME. OVERWRITE is non-zero if you
wish to replace FILENAME with the entries. */
static int
-history_do_write (filename, nelements, overwrite)
- const char *filename;
- int nelements, overwrite;
+history_do_write (const char *filename, int nelements, int overwrite)
{
register int i;
char *output, *tempname, *histname;
history_lines_written_to_file = 0;
}
+#if defined (HAVE_CHOWN)
/* Make sure the new filename is owned by the same user as the old. If one
user is running this, it's a no-op. If the shell is running after sudo
with a shared history file, we don't want to leave the history file
owned by root. */
if (rv == 0 && exists)
mode = chown (histname, finfo.st_uid, finfo.st_gid);
+#endif
FREE (histname);
FREE (tempname);
/* Append NELEMENT entries to FILENAME. The entries appended are from
the end of the list minus NELEMENTs up to the end of the list. */
int
-append_history (nelements, filename)
- int nelements;
- const char *filename;
+append_history (int nelements, const char *filename)
{
return (history_do_write (filename, nelements, HISTORY_APPEND));
}
then write the history list to ~/.history. Values returned
are as in read_history ().*/
int
-write_history (filename)
- const char *filename;
+write_history (const char *filename)
{
return (history_do_write (filename, history_length, HISTORY_OVERWRITE));
}
projects / deliverable / binutils-gdb.git / blobdiff