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Fix #462: /dev/pts mounted with wrong mode

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Before this fix:

    admin@infix:~$ sudo ls -la /dev/pts/
    total 0
    drwxr-xr-x    2 root     root             0 Dec 24 08:16 .
    drwxr-xr-x   13 root     root         13340 Dec 24 08:16 ..
    cr--------    1 root     tty       136,   0 Dec 24 08:18 0
    crw-rw-rw-    1 root     root        5,   2 Dec 24 08:16 ptmx
    admin@infix:~$ mount | grep devpts
    devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=400,ptmxmode=666)

After:

    admin@infix-00-00-00:~$ sudo ls -l /dev/pts/
    total 0
    crw--w----    1 root     tty       136,   0 Dec 24 08:21 0
    crw-rw-rw-    1 root     root        5,   2 Dec 24 08:20 ptmx
    admin@infix-00-00-00:~$ mount |grep pts
    devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666)

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
This commit is contained in:
Joachim Wiberg
2025-12-24 09:23:30 +01:00
parent 702a606d26
commit 22bc218c84
1 changed files with 1 additions and 3 deletions
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src/finit.c
+1 -3
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@@ -371,7 +371,6 @@ static void fs_finalize(void)
/* Modern systems use /dev/pts */
if (!fismnt("/dev/pts")) {
char opts[32];
int mode;
int gid;
gid = getgroup("tty");
@@ -379,8 +378,7 @@ static void fs_finalize(void)
gid = 0;
/* 0600 is default on Debian, use 0620 to get mesg y by default */
mode = 0620;
snprintf(opts, sizeof(opts), "gid=%d,mode=%d,ptmxmode=0666", gid, mode);
snprintf(opts, sizeof(opts), "gid=%d,mode=0620,ptmxmode=0666", gid);
makedir("/dev/pts", 0755);
fs_mount("devpts", "/dev/pts", "devpts", flags, opts);