diff options
Diffstat (limited to 'src/mds-vt.c')
| -rw-r--r-- | src/mds-vt.c | 49 |
1 files changed, 41 insertions, 8 deletions
diff --git a/src/mds-vt.c b/src/mds-vt.c index 93e97e8..99a34ed 100644 --- a/src/mds-vt.c +++ b/src/mds-vt.c @@ -241,13 +241,8 @@ int initialise_server(void) if (is_respawn == 0) { - display_vt = vt_get_next_available(); /* TODO add support for $XDG_VTNR */ - if (display_vt == 0) - { - eprint("out of available virtual terminals, I am stymied."); - goto fail; - } - else if (display_vt < 0) + display_vt = select_vt(); + if (display_vt < 0) goto pfail; display_tty_fd = vt_open(display_vt, &old_vt_stat); fail_if (write_vt_file() < 0); @@ -280,7 +275,6 @@ int initialise_server(void) return 1; pfail: xperror(*argv); - fail: unlink(vtfile_path); if (display_tty_fd >= 0) vt_close(display_tty_fd, &old_vt_stat); @@ -741,6 +735,45 @@ int full_send(int socket, const char* message, size_t length) /** + * Get the index of the virtual terminal on which the display should be opened + * + * @return The index of the virtual terminal on which the display should be opened, -1 on error + */ +int select_vt(void) +{ + int rc, r; + const char* xdg_vtnr; + + xdg_vtnr = getenv("XDG_VTNR"); + if (xdg_vtnr == NULL) + xdg_vtnr = ""; + + if (*xdg_vtnr) + { + /* $XDG_VTNR has been specified, use it to select VT. */ + r = strict_atoi(xdg_vtnr, &rc, MIN_NR_CONSOLES, MAX_NR_CONSOLES); + if (r < 0) + { + eprint("the environment variable XDG_VTNR contains an invalid value."); + return errno = 0, -1; + } + } + else + { + /* $XDG_VTNR has not been specified, select next available VT. */ + rc = vt_get_next_available(); + if (rc == 0) + { + eprint("out of available virtual terminals, I am stymied."); + return errno = 0, -1; + } + } + + return rc; +} + + +/** * Get the index of the next available virtual terminal * * @return -1 on error, 0 if the terminals are exhausted, otherwise the next terminal |