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* grp.cc (etc_group): Removed.

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(parse_grp): Make line parameter nonconst.  Don't copy data into new
	allocated memory.  Check for CR instead of LF to accomodate new
	read method.
	(add_grp_line): Make line parameter nonconst.
	(read_etc_group): Rearrange using new pwdgrp_read class.
	* passwd.cc (parse_pwd): Don't copy data into new allocated memory.
	Check for CR instead of LF to accomodate new read method.
	(read_etc_passwd): Rearrange using new pwdgrp_read class.
	* pwdgrp.h (pwdgrp_check::set_last_modified):  Use different
	parameters.
	(class pwdgrp_read): New class for opening and reading passwd and
	group files.
This commit is contained in:
Corinna Vinschen
2002-06-05 11:10:15 +00:00
parent ce006ffa7f
commit 38f3936889
4 changed files with 158 additions and 99 deletions
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69
winsup/cygwin/grp.cc
View File

@ -29,7 +29,6 @@ details. */
/* Read /etc/group only once for better performance. This is done
on the first call that needs information from it. */
static const char *etc_group NO_COPY = "/etc/group";
static struct __group32 *group_buf; /* group contents in memory */
static int curr_lines;
static int max_lines;
@ -44,22 +43,19 @@ static int grp_pos = 0;
static pwdgrp_check group_state;
static int
parse_grp (struct __group32 &grp, const char *line)
parse_grp (struct __group32 &grp, char *line)
{
int len = strlen(line);
char *newline = (char *) malloc (len + 1);
(void) memcpy (newline, line, len + 1);
if (line[--len] == '\r')
line[len] = '\0';
if (newline[--len] == '\n')
newline[len] = '\0';
char *dp = strchr (newline, ':');
char *dp = strchr (line, ':');
if (!dp)
return 0;
*dp++ = '\0';
grp.gr_name = newline;
grp.gr_name = line;
grp.gr_passwd = dp;
dp = strchr (grp.gr_passwd, ':');
@ -104,7 +100,7 @@ parse_grp (struct __group32 &grp, const char *line)
/* Read one line from /etc/group into the group cache */
static void
add_grp_line (const char *line)
add_grp_line (char *line)
{
if (curr_lines == max_lines)
{
@ -143,11 +139,7 @@ pthread_mutex_t NO_COPY group_lock::mutex = (pthread_mutex_t) PTHREAD_MUTEX_INIT
void
read_etc_group ()
{
char linebuf [200];
char group_name [UNLEN + 1];
DWORD group_name_len = UNLEN + 1;
strncpy (group_name, "Administrators", sizeof (group_name));
static pwdgrp_read gr;
group_lock here (cygwin_finished_initializing);
@ -158,49 +150,38 @@ read_etc_group ()
if (group_state != initializing)
{
group_state = initializing;
if (max_lines) /* When rereading, free allocated memory first. */
if (gr.open ("/etc/group"))
{
for (int i = 0; i < curr_lines; ++i)
{
free (group_buf[i].gr_name);
free (group_buf[i].gr_mem);
}
curr_lines = 0;
}
char *line;
while ((line = gr.gets ()) != NULL)
if (strlen (line))
add_grp_line (line);
FILE *f = fopen (etc_group, "rt");
if (f)
{
while (fgets (linebuf, sizeof (linebuf), f) != NULL)
{
if (strlen (linebuf))
add_grp_line (linebuf);
}
group_state.set_last_modified (f);
fclose (f);
group_state.set_last_modified (gr.get_fhandle(), gr.get_fname ());
group_state = loaded;
gr.close ();
debug_printf ("Read /etc/group, %d lines", curr_lines);
}
else /* /etc/group doesn't exist -- create default one in memory */
{
char group_name [UNLEN + 1];
DWORD group_name_len = UNLEN + 1;
char domain_name [INTERNET_MAX_HOST_NAME_LENGTH + 1];
DWORD domain_name_len = INTERNET_MAX_HOST_NAME_LENGTH + 1;
SID_NAME_USE acType;
static char linebuf [200];
debug_printf ("Emulating /etc/group");
if (! LookupAccountSidA (NULL ,
well_known_admins_sid,
group_name,
&group_name_len,
domain_name,
&domain_name_len,
&acType))
strncpy (group_name, "Administrators", sizeof (group_name));
if (! LookupAccountSidA (NULL, well_known_admins_sid, group_name,
&group_name_len, domain_name,
&domain_name_len, &acType))
{
strcpy (group_name, "unknown");
debug_printf ("Failed to get local admins group name. %E");
}
snprintf (linebuf, sizeof (linebuf), "%s::%u:\n", group_name, (unsigned) DEFAULT_GID);
snprintf (linebuf, sizeof (linebuf), "%s::%u:\n", group_name,
(unsigned) DEFAULT_GID);
add_grp_line (linebuf);
group_state = emulated;
}