#include "util.h"
#include "virt.h"
-static bool is_vconsole(int fd) {
+static int verify_vc_device(int fd) {
unsigned char data[1];
+ int r;
data[0] = TIOCL_GETFGCONSOLE;
- return ioctl(fd, TIOCLINUX, data) >= 0;
+ r = ioctl(fd, TIOCLINUX, data);
+ return r < 0 ? -errno : r;
}
-static bool is_allocated(unsigned int idx) {
- char vcname[strlen("/dev/vcs") + DECIMAL_STR_MAX(int)];
+static int verify_vc_allocation(unsigned idx) {
+ char vcname[sizeof("/dev/vcs") + DECIMAL_STR_MAX(unsigned) - 2];
+ int r;
- xsprintf(vcname, "/dev/vcs%i", idx);
- return access(vcname, F_OK) == 0;
+ xsprintf(vcname, "/dev/vcs%u", idx);
+ r = access(vcname, F_OK);
+ return r < 0 ? -errno : r;
}
-static bool is_allocated_byfd(int fd) {
+static int verify_vc_allocation_byfd(int fd) {
struct vt_stat vcs = {};
+ int r;
- if (ioctl(fd, VT_GETSTATE, &vcs) < 0) {
- log_warning_errno(errno, "VT_GETSTATE failed: %m");
- return false;
- }
- return is_allocated(vcs.v_active);
+ r = ioctl(fd, VT_GETSTATE, &vcs);
+ return r < 0 ? -errno : verify_vc_allocation(vcs.v_active);
}
-static bool is_settable(int fd) {
+static int verify_vc_kbmode(int fd) {
int r, curr_mode;
r = ioctl(fd, KDGKBMODE, &curr_mode);
*
* http://lists.freedesktop.org/archives/systemd-devel/2013-February/008573.html
*/
- return r == 0 && IN_SET(curr_mode, K_XLATE, K_UNICODE);
+ if (r < 0)
+ return -errno;
+
+ return IN_SET(curr_mode, K_XLATE, K_UNICODE) ? 0 : -EBUSY;
}
static int toggle_utf8(const char *name, int fd, bool utf8) {
static int keyboard_load_and_wait(const char *vc, const char *map, const char *map_toggle, bool utf8) {
_cleanup_free_ char *cmd = NULL;
const char *args[8];
- int i = 0;
+ unsigned i = 0;
pid_t pid;
/* An empty map means kernel map */
static int font_load_and_wait(const char *vc, const char *font, const char *map, const char *unimap) {
_cleanup_free_ char *cmd = NULL;
const char *args[9];
- int i = 0;
+ unsigned i = 0;
pid_t pid;
/* Any part can be set independently */
}
/*
- * A newly allocated VT uses the font from the active VT. Here
+ * A newly allocated VT uses the font from the source VT. Here
* we update all possibly already allocated VTs with the configured
* font. It also allows to restart systemd-vconsole-setup.service,
* to apply a new font to all VTs.
* We also setup per-console utf8 related stuff: kbdmode, term
* processing, stty iutf8.
*/
-static void setup_remaining_vcs(int fd, bool utf8) {
+static void setup_remaining_vcs(int src_fd, unsigned src_idx, bool utf8) {
struct console_font_op cfo = {
.op = KD_FONT_OP_GET,
.width = UINT_MAX, .height = UINT_MAX,
.charcount = UINT_MAX,
};
- struct vt_stat vcs = {};
struct unimapinit adv = {};
struct unimapdesc unimapd;
_cleanup_free_ struct unipair* unipairs = NULL;
_cleanup_free_ void *fontbuf = NULL;
- int i, r;
+ unsigned i;
+ int r;
unipairs = new(struct unipair, USHRT_MAX);
if (!unipairs) {
return;
}
- /* get active, and 16 bit mask of used VT numbers */
- r = ioctl(fd, VT_GETSTATE, &vcs);
- if (r < 0) {
- log_warning_errno(errno, "VT_GETSTATE failed, ignoring remaining consoles: %m");
- return;
- }
-
/* get metadata of the current font (width, height, count) */
- r = ioctl(fd, KDFONTOP, &cfo);
+ r = ioctl(src_fd, KDFONTOP, &cfo);
if (r < 0)
log_warning_errno(errno, "KD_FONT_OP_GET failed while trying to get the font metadata: %m");
else {
log_oom();
return;
}
- /* get fonts from source console */
+ /* get fonts from the source console */
cfo.data = fontbuf;
- r = ioctl(fd, KDFONTOP, &cfo);
+ r = ioctl(src_fd, KDFONTOP, &cfo);
if (r < 0)
log_warning_errno(errno, "KD_FONT_OP_GET failed while trying to read the font data: %m");
else {
unimapd.entries = unipairs;
unimapd.entry_ct = USHRT_MAX;
- r = ioctl(fd, GIO_UNIMAP, &unimapd);
+ r = ioctl(src_fd, GIO_UNIMAP, &unimapd);
if (r < 0)
log_warning_errno(errno, "GIO_UNIMAP failed while trying to read unicode mappings: %m");
else
log_warning("Fonts will not be copied to remaining consoles");
for (i = 1; i <= 63; i++) {
- char ttyname[strlen("/dev/tty") + DECIMAL_STR_MAX(int)];
+ char ttyname[sizeof("/dev/tty63")];
_cleanup_close_ int fd_d = -1;
- if (i == vcs.v_active || !is_allocated(i))
+ if (i == src_idx || verify_vc_allocation(i) < 0)
continue;
/* try to open terminal */
- xsprintf(ttyname, "/dev/tty%i", i);
- fd_d = open_terminal(ttyname, O_RDWR|O_CLOEXEC);
+ xsprintf(ttyname, "/dev/tty%u", i);
+ fd_d = open_terminal(ttyname, O_RDWR|O_CLOEXEC|O_NOCTTY);
if (fd_d < 0) {
- log_warning_errno(fd_d, "Unable to open tty%i, fonts will not be copied: %m", i);
+ log_warning_errno(fd_d, "Unable to open tty%u, fonts will not be copied: %m", i);
continue;
}
- if (!is_settable(fd_d))
+ if (verify_vc_kbmode(fd_d) < 0)
continue;
toggle_utf8(ttyname, fd_d, utf8);
r = ioctl(fd_d, KDFONTOP, &cfo);
if (r < 0) {
- log_warning_errno(errno, "KD_FONT_OP_SET failed, fonts will not be copied to tty%i: %m", i);
+ log_warning_errno(errno, "KD_FONT_OP_SET failed, fonts will not be copied to tty%u: %m", i);
continue;
}
- /* copy unicode translation table */
- /* unimapd is a ushort count and a pointer to an
- array of struct unipair { ushort, ushort } */
+ /*
+ * copy unicode translation table
+ * unimapd is a ushort count and a pointer to an
+ * array of struct unipair { ushort, ushort }
+ */
r = ioctl(fd_d, PIO_UNIMAPCLR, &adv);
if (r < 0) {
- log_warning_errno(errno, "PIO_UNIMAPCLR failed, unimaps might be incorrect for tty%i: %m", i);
+ log_warning_errno(errno, "PIO_UNIMAPCLR failed, unimaps might be incorrect for tty%u: %m", i);
continue;
}
r = ioctl(fd_d, PIO_UNIMAP, &unimapd);
if (r < 0) {
- log_warning_errno(errno, "PIO_UNIMAP failed, unimaps might be incorrect for tty%i: %m", i);
+ log_warning_errno(errno, "PIO_UNIMAP failed, unimaps might be incorrect for tty%u: %m", i);
continue;
}
}
}
+static int find_source_vc(char **ret_path, unsigned *ret_idx) {
+ _cleanup_free_ char *path = NULL;
+ unsigned i;
+ int ret_fd, r, err = 0;
+
+ path = new(char, sizeof("/dev/tty63"));
+ if (path == NULL)
+ return log_oom();
+
+ for (i = 1; i <= 63; i++) {
+ _cleanup_close_ int fd = -1;
+
+ r = verify_vc_allocation(i);
+ if (r < 0) {
+ if (!err)
+ err = -r;
+ continue;
+ }
+
+ sprintf(path, "/dev/tty%u", i);
+ fd = open_terminal(path, O_RDWR|O_CLOEXEC|O_NOCTTY);
+ if (fd < 0) {
+ if (!err)
+ err = -fd;
+ continue;
+ }
+ r = verify_vc_kbmode(fd);
+ if (r < 0) {
+ if (!err)
+ err = -r;
+ continue;
+ }
+
+ /* all checks passed, return this one as a source console */
+ *ret_idx = i;
+ *ret_path = path;
+ path = NULL;
+ ret_fd = fd;
+ fd = -1;
+ return ret_fd;
+ }
+
+ return log_error_errno(err, "No usable source console found: %m");
+}
+
+static int verify_source_vc(char **ret_path, const char *src_vc) {
+ char *path;
+ _cleanup_close_ int fd = -1;
+ int ret_fd, r;
+
+ fd = open_terminal(src_vc, O_RDWR|O_CLOEXEC|O_NOCTTY);
+ if (fd < 0)
+ return log_error_errno(fd, "Failed to open %s: %m", src_vc);
+
+ r = verify_vc_device(fd);
+ if (r < 0)
+ return log_error_errno(r, "Device %s is not a virtual console: %m", src_vc);
+
+ r = verify_vc_allocation_byfd(fd);
+ if (r < 0)
+ return log_error_errno(r, "Virtual console %s is not allocated: %m", src_vc);
+
+ r = verify_vc_kbmode(fd);
+ if (r < 0)
+ return log_error_errno(r, "Virtual console %s is not in K_XLATE or K_UNICODE: %m", src_vc);
+
+ path = strdup(src_vc);
+ if (path == NULL)
+ return log_oom();
+
+ *ret_path = path;
+ ret_fd = fd;
+ fd = -1;
+ return ret_fd;
+}
+
int main(int argc, char **argv) {
- const char *vc;
_cleanup_free_ char
+ *vc = NULL,
*vc_keymap = NULL, *vc_keymap_toggle = NULL,
*vc_font = NULL, *vc_font_map = NULL, *vc_font_unimap = NULL;
_cleanup_close_ int fd = -1;
- bool utf8, font_copy = false, keyboard_ok;
+ bool utf8, keyboard_ok;
+ unsigned idx = 0;
int r;
log_set_target(LOG_TARGET_AUTO);
umask(0022);
if (argv[1])
- vc = argv[1];
- else {
- vc = "/dev/tty0";
- font_copy = true;
- }
+ fd = verify_source_vc(&vc, argv[1]);
+ else
+ fd = find_source_vc(&vc, &idx);
- fd = open_terminal(vc, O_RDWR|O_CLOEXEC);
- if (fd < 0) {
- log_error_errno(fd, "Failed to open %s: %m", vc);
+ if (fd < 0)
return EXIT_FAILURE;
- }
-
- if (!is_vconsole(fd)) {
- log_error("Device %s is not a virtual console.", vc);
- return EXIT_FAILURE;
- }
-
- if (!is_allocated_byfd(fd)) {
- log_error("Virtual console %s is not allocated.", vc);
- return EXIT_FAILURE;
- }
-
- if (!is_settable(fd)) {
- log_error("Virtual console %s is not in K_XLATE or K_UNICODE.", vc);
- return EXIT_FAILURE;
- }
utf8 = is_locale_utf8();
r = font_load_and_wait(vc, vc_font, vc_font_map, vc_font_unimap);
keyboard_ok = keyboard_load_and_wait(vc, vc_keymap, vc_keymap_toggle, utf8) == 0;
- if (font_copy) {
+ if (idx > 0) {
if (r == 0)
- setup_remaining_vcs(fd, utf8);
+ setup_remaining_vcs(fd, idx, utf8);
else if (r == EX_OSERR)
/* setfont returns EX_OSERR when ioctl(KDFONTOP/PIO_FONTX/PIO_FONTX) fails.
* This might mean various things, but in particular lack of a graphical
projects / thirdparty / systemd.git / commitdiff
