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[PATCH] $local user

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We once implemented the devfsd feature to set the owner of a device node
to the "local" user. This was before we had the dev.d/ scripts. We discussed
a similar issue with D-BUS recently and this should be better handled depending
on the distributions way to do such a thing.

I'm for removing this here as this can be easily covered by a dev.d/
script.

Here is the patch if nobody objects :)
This commit is contained in:
kay.sievers@vrfy.org 2004-10-18 20:51:13 -07:00 committed by Greg KH
parent 1da6b0d0a7
commit 9cd1b46a13
4 changed files with 0 additions and 85 deletions
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34
klibc_fixups.c
View File

@ -125,38 +125,4 @@ struct group *getgrnam(const char *name)
return &gr;
}
int ufd = -1;
void setutent()
{
if (ufd < 0)
ufd = open(UTMP_FILE, O_RDONLY);
fcntl(ufd, F_SETFD, FD_CLOEXEC);
lseek(ufd, 0, SEEK_SET);
}
void endutent() {
if (ufd < 0)
return;
close(ufd);
ufd = -1;
}
struct utmp *getutent(void)
{
static struct utmp utmp;
int retval;
if (ufd < 0) {
setutent();
if (ufd < 0)
return NULL;
}
retval = read(ufd, &utmp, sizeof(struct utmp));
if (retval < 1)
return NULL;
return &utmp;
}
#endif

5
klibc_fixups.h
View File

@ -62,10 +62,5 @@ struct utmp
char __unused[20]; /* reserved for future use */
};
struct utmp *getutent(void);
void setutent(void);
void endutent(void);
#endif /* KLIBC_FIXUPS_H */
#endif /* __KLIBC__ */

11
udev.8.in
View File

@ -335,17 +335,6 @@ video*:root:video:0660
dsp1:::0666
.fi
.P
The value
.I $local
can be used instead of a specific username. In that case, udev will determine
the current local user at the time of device node creation and substitute
that username as the owner of the new device node. This is useful, for
example, to let hot-plugged devices, such as cameras, be owned by the user at
the current console. Note that if no user is currently logged in, or if udev
otherwise fails to determine a current user, the
.I default_owner
value is used in lieu.
.P
A number of different fields in the above configuration files support a simple
form of shell style pattern matching. It supports the following pattern characters:
.TP

35
udev_add.c
View File

@ -48,8 +48,6 @@
#include "udevdb.h"
#include "klibc_fixups.h"
#define LOCAL_USER "$local"
#include "selinux.h"
/*
@ -155,37 +153,6 @@ exit:
return retval;
}
/* get the local logged in user */
static void set_to_local_user(char *user)
{
struct utmp *u;
time_t recent = 0;
strfieldcpymax(user, default_owner_str, OWNER_SIZE);
setutent();
while (1) {
u = getutent();
if (u == NULL)
break;
/* is this a user login ? */
if (u->ut_type != USER_PROCESS)
continue;
/* is this a local login ? */
if (strcmp(u->ut_host, ""))
continue;
if (u->ut_time > recent) {
recent = u->ut_time;
strfieldcpymax(user, u->ut_user, OWNER_SIZE);
dbg("local user is '%s'", user);
break;
}
}
endutent();
}
static int create_node(struct udevice *udev)
{
char filename[NAME_SIZE];
@ -229,8 +196,6 @@ static int create_node(struct udevice *udev)
uid = (uid_t) id;
else {
struct passwd *pw;
if (strncmp(udev->owner, LOCAL_USER, sizeof(LOCAL_USER)) == 0)
set_to_local_user(udev->owner);
pw = getpwnam(udev->owner);
if (pw == NULL)