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57 lines
2.3 KiB
57 lines
2.3 KiB
--- a/lib/libv4lconvert/control/libv4lcontrol.c
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+++ b/lib/libv4lconvert/control/libv4lcontrol.c
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@@ -570,7 +570,7 @@ static void v4lcontrol_get_flags_from_db
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struct v4lcontrol_data *v4lcontrol_create(int fd, void *dev_ops_priv,
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const struct libv4l_dev_ops *dev_ops, int always_needs_conversion)
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{
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- int shm_fd;
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+ int shm_fd, fdflags;
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int i, rc, got_usb_info, speed, init = 0;
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char *s, shm_name[256], pwd_buf[1024];
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struct v4l2_capability cap;
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@@ -695,33 +695,38 @@ struct v4lcontrol_data *v4lcontrol_creat
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if (getpwuid_r(geteuid(), &pwd, pwd_buf, sizeof(pwd_buf), &pwd_p) == 0) {
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if (got_usb_info)
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- snprintf(shm_name, 256, "/libv4l-%s:%s:%04x:%04x:%s", pwd.pw_name,
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+ snprintf(shm_name, 256, "/dev/shm/libv4l-%s:%s:%04x:%04x:%s", pwd.pw_name,
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cap.bus_info, (int)vendor_id, (int)product_id, cap.card);
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else
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- snprintf(shm_name, 256, "/libv4l-%s:%s:%s", pwd.pw_name,
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+ snprintf(shm_name, 256, "/dev/shm/libv4l-%s:%s:%s", pwd.pw_name,
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cap.bus_info, cap.card);
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} else {
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perror("libv4lcontrol: error getting username using uid instead");
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if (got_usb_info)
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- snprintf(shm_name, 256, "/libv4l-%lu:%s:%04x:%04x:%s",
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+ snprintf(shm_name, 256, "/dev/shm/libv4l-%lu:%s:%04x:%04x:%s",
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(unsigned long)geteuid(), cap.bus_info,
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(int)vendor_id, (int)product_id, cap.card);
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else
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- snprintf(shm_name, 256, "/libv4l-%lu:%s:%s", (unsigned long)geteuid(),
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+ snprintf(shm_name, 256, "/dev/shm/libv4l-%lu:%s:%s", (unsigned long)geteuid(),
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cap.bus_info, cap.card);
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}
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/* / is not allowed inside shm names */
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- for (i = 1; shm_name[i]; i++)
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+ for (i = 9; shm_name[i]; i++) /* start after "/dev/shm", i = 9 */
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if (shm_name[i] == '/')
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shm_name[i] = '-';
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/* Open the shared memory object identified by shm_name */
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- shm_fd = shm_open(shm_name, (O_CREAT | O_EXCL | O_RDWR), (S_IREAD | S_IWRITE));
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+ shm_fd = open(shm_name, (O_CREAT | O_EXCL | O_RDWR), (S_IREAD | S_IWRITE));
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if (shm_fd >= 0)
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init = 1;
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else
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- shm_fd = shm_open(shm_name, O_RDWR, (S_IREAD | S_IWRITE));
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+ shm_fd = open(shm_name, O_RDWR, (S_IREAD | S_IWRITE));
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+
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+ /* This is all uClibc > 0.9.30 seems to do for shm_open() in librt/shm.c */
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+ fdflags = fcntl(shm_fd, F_GETFD, 0);
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+ if (fdflags >= 0)
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+ fdflags = fcntl(fd, F_SETFD, fdflags | FD_CLOEXEC);
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if (shm_fd >= 0) {
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/* Set the shared memory size */
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