diff options
| author | Michael I. Bushnell <mib@gnu.org> | 1995-12-05 02:24:00 +0000 |
|---|---|---|
| committer | Michael I. Bushnell <mib@gnu.org> | 1995-12-05 02:24:00 +0000 |
| commit | 288de794aea9ad381bd57da0286a319aee28f82f (patch) | |
| tree | 5b7c609a180637805d3730a5fdde9387b6d37af3 /term | |
| parent | 0a871a8810374492f0cd7de759e01d419ded04e7 (diff) | |
(pty_io_read, pty_io_write): Validate CRED.
Diffstat (limited to 'term')
| -rw-r--r-- | term/ptyio.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/term/ptyio.c b/term/ptyio.c index 697cd289..782a00f1 100644 --- a/term/ptyio.c +++ b/term/ptyio.c @@ -220,7 +220,11 @@ pty_io_read (struct trivfs_protid *cred, mutex_lock (&global_lock); - /* Validate CRED. XXX */ + if ((cred->po->openmodes & O_READ) == 0) + { + mutex_unlock (&global_lock); + return EBADF; + } while (!control_byte && (!qsize (outputq) || (termflags & USER_OUTPUT_SUSP))) @@ -282,7 +286,11 @@ pty_io_write (struct trivfs_protid *cred, mutex_lock (&global_lock); - /* Validate CRED. XXX */ + if ((cred->po->openmodes & O_WRITE) == 0) + { + mutex_unlock (&global_lock); + return EBADF; + } if (remote_input_mode) { @@ -349,8 +357,6 @@ pty_io_select (struct trivfs_protid *cred, mutex_lock (&global_lock); - /* Validate CRED. XXX */ - while (1) { if ((*type & SELECT_READ) && (control_byte || qsize (outputq))) |