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* cygheap.cc (init_cygheap::etc_changed): New method to signal

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a change in /etc.
	* cygheap.h (struct init_cygheap): Add member `etc_changed_h'
	and method `etc_changed'.
	* grp.cc (enum grp_state): Eliminate.
	(class grp_check): Ditto.
	(group_state): Define as `class pwdgrp_check'.
	(parse_grp): Remeber path and modification time of /etc/group file.
	* passwd.cc (enum_pwd_state): Eliminate.
	(class pwd_check): Ditto.
	(passwd_state): Define as `class pwdgrp_check'.
	(read_etc_passwd): Remember path and modification time of /etc/passwd
	file.
	* pwdgrp.h: New file.
	(enum pwdgrp_state): Substitutes `pwd_state' and `grp_state'.
	(class pwdgrp_check): Substitutes `pwd_check' and `grp_check'.
This commit is contained in:
Corinna Vinschen
2001-09-09 16:52:37 +00:00
parent d961def403
commit 49eef6d5f7
7 changed files with 124 additions and 103 deletions
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54
winsup/cygwin/grp.cc
View File

@@ -26,6 +26,7 @@ details. */
#include "path.h"
#include "cygheap.h"
#include "cygerrno.h"
#include "pwdgrp.h"
/* Read /etc/group only once for better performance. This is done
on the first call that needs information from it. */
@@ -42,57 +43,7 @@ static int max_lines;
static int grp_pos = 0;
#endif
/* Set to loaded when /etc/passwd has been read in by read_etc_passwd ().
Set to emulated if passwd is emulated. */
/* Functions in this file need to check the value of passwd_state
and read in the password file if it isn't set. */
enum grp_state {
uninitialized = 0,
initializing,
emulated,
loaded
};
class grp_check {
grp_state state;
FILETIME last_modified;
char grp_w32[MAX_PATH];
public:
grp_check () : state (uninitialized)
{
last_modified.dwLowDateTime = last_modified.dwHighDateTime = 0;
grp_w32[0] = '\0';
}
operator grp_state ()
{
HANDLE h;
WIN32_FIND_DATA data;
if (!grp_w32[0]) /* First call. */
{
path_conv g ("/etc/group", PC_SYM_FOLLOW | PC_FULL);
if (!g.error)
strcpy (grp_w32, g.get_win32 ());
}
if ((h = FindFirstFile (grp_w32, &data)) != INVALID_HANDLE_VALUE)
{
if (CompareFileTime (&data.ftLastWriteTime, &last_modified) > 0)
{
state = uninitialized;
last_modified = data.ftLastWriteTime;
}
FindClose (h);
}
return state;
}
void operator = (grp_state nstate)
{
state = nstate;
}
};
static grp_check group_state;
static pwdgrp_check group_state;
static int
parse_grp (struct group &grp, const char *line)
@@ -215,6 +166,7 @@ read_etc_group ()
add_grp_line (linebuf);
}
group_state.set_last_modified (f);
fclose (f);
group_state = loaded;
}