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term: term_init(): create wayland window *last*

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* Configure all FDs *completely* before moving on
* Start client before creating the wayland window
This commit is contained in:
Daniel Eklöf 2019-10-30 20:22:01 +01:00
parent 54039c1fb4
commit 58e31728a0
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GPG key ID: 5BBD4992C116573F
1 changed files with 57 additions and 48 deletions
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105
terminal.c
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@ -304,7 +304,7 @@ term_init(const struct config *conf, struct fdm *fdm, struct wayland *wayl,
int delay_lower_fd = -1;
int delay_upper_fd = -1;
struct terminal *term = NULL;
struct terminal *term = malloc(sizeof(*term));
if ((ptmx = posix_openpt(O_RDWR | O_NOCTTY)) == -1) {
LOG_ERRNO("failed to open PTY");
@ -325,8 +325,43 @@ term_init(const struct config *conf, struct fdm *fdm, struct wayland *wayl,
goto close_fds;
}
/* Read logic requires non-blocking mode */
{
int fd_flags = fcntl(ptmx, F_GETFL);
if (fd_flags == -1) {
LOG_ERRNO("failed to set non blocking mode on PTY master");
goto err;
}
if (fcntl(ptmx, F_SETFL, fd_flags | O_NONBLOCK) == -1) {
LOG_ERRNO("failed to set non blocking mode on PTY master");
goto err;
}
}
if (!fdm_add(fdm, ptmx, EPOLLIN, &fdm_ptmx, term)) {
LOG_ERR("failed to add ptmx to FDM");
goto err;
}
if (!fdm_add(fdm, flash_fd, EPOLLIN, &fdm_flash, term)) {
LOG_ERR("failed to add flash timer FD to FDM");
goto err;
}
if (!fdm_add(fdm, blink_fd, EPOLLIN, &fdm_blink, term)) {
LOG_ERR("failed to add blink tiemr FD to FDM");
goto err;
}
if (!fdm_add(fdm, delay_lower_fd, EPOLLIN, &fdm_delayed_render, term) ||
!fdm_add(fdm, delay_upper_fd, EPOLLIN, &fdm_delayed_render, term))
{
LOG_ERR("failed to add delayed rendering timer FDs to FDM");
goto err;
}
/* Initialize configure-based terminal attributes */
term = malloc(sizeof(*term));
*term = (struct terminal) {
.fdm = fdm,
.quit = false,
@ -410,6 +445,10 @@ term_init(const struct config *conf, struct fdm *fdm, struct wayland *wayl,
term->cell_height = (int)ceil(term->fextents.height);
LOG_INFO("cell width=%d, height=%d", term->cell_width, term->cell_height);
/* Start the slave/client */
if (slave_spawn(term->ptmx, argc, argv, conf->shell) == -1)
goto err;
/* Initiailze the Wayland window backend */
if ((term->window = wayl_win_init(wayl)) == NULL)
goto err;
@ -432,46 +471,6 @@ term_init(const struct config *conf, struct fdm *fdm, struct wayland *wayl,
height = max(height, term->cell_height);
render_resize(term, width, height);
/* Start the slave/client */
if (!slave_spawn(term->ptmx, argc, argv, conf->shell))
goto err;
/* Read logic requires non-blocking mode */
{
int fd_flags = fcntl(ptmx, F_GETFL);
if (fd_flags == -1) {
LOG_ERRNO("failed to set non blocking mode on PTY master");
goto err;
}
if (fcntl(ptmx, F_SETFL, fd_flags | O_NONBLOCK) == -1) {
LOG_ERRNO("failed to set non blocking mode on PTY master");
goto err;
}
}
if (!fdm_add(fdm, ptmx, EPOLLIN, &fdm_ptmx, term)) {
LOG_ERR("failed to add ptmx to FDM");
goto err;
}
if (!fdm_add(fdm, flash_fd, EPOLLIN, &fdm_flash, term)) {
LOG_ERR("failed to add flash timer FD to FDM");
goto err;
}
if (!fdm_add(fdm, blink_fd, EPOLLIN, &fdm_blink, term)) {
LOG_ERR("failed to add blink tiemr FD to FDM");
goto err;
}
if (!fdm_add(fdm, delay_lower_fd, EPOLLIN, &fdm_delayed_render, term) ||
!fdm_add(fdm, delay_upper_fd, EPOLLIN, &fdm_delayed_render, term))
{
LOG_ERR("failed to add delayed rendering timer FDs to FDM");
goto err;
}
tll_push_back(wayl->terms, term);
return term;
@ -480,17 +479,27 @@ err:
return NULL;
close_fds:
if (ptmx != -1)
if (ptmx != -1) {
fdm_del(fdm, ptmx);
close(ptmx);
if (flash_fd != -1)
}
if (flash_fd != -1) {
fdm_del(fdm, flash_fd);
close(flash_fd);
if (blink_fd != -1)
}
if (blink_fd != -1) {
fdm_del(fdm, blink_fd);
close(blink_fd);
if (delay_lower_fd != -1)
}
if (delay_lower_fd != -1) {
fdm_del(fdm, delay_lower_fd);
close(delay_lower_fd);
if (delay_upper_fd != -1)
}
if (delay_upper_fd != -1) {
fdm_del(fdm, delay_upper_fd);
close(delay_upper_fd);
assert(term == NULL);
}
free(term);
return NULL;
}