diff options
Diffstat (limited to 'sysdeps/unix/grantpt.c')
| -rw-r--r-- | sysdeps/unix/grantpt.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/sysdeps/unix/grantpt.c b/sysdeps/unix/grantpt.c index a6fa6f912b..5f27ce91e3 100644 --- a/sysdeps/unix/grantpt.c +++ b/sysdeps/unix/grantpt.c @@ -49,10 +49,18 @@ pts_name (int fd, char **pts, size_t buf_len) if (buf_len) { rv = __ptsname_r (fd, buf, buf_len); - - if (rv != 0 || memchr (buf, '\0', buf_len)) - /* We either got an error, or we succeeded and the - returned name fit in the buffer. */ + if (rv != 0) + { + if (rv == ENOTTY) + /* ptsname_r returns with ENOTTY to indicate + a descriptor not referring to a pty master. + For this condition, grantpt must return EINVAL. */ + errno = EINVAL; + break; + } + + if (memchr (buf, '\0', buf_len)) + /* We succeeded and the returned name fit in the buffer. */ break; /* Try again with a longer buffer. */ |