fix: update snapshot and status handling to use /tmp for temporary files instead of /dev/shm

Author: stackia

docs/cn-fcc-collection.md

@@ -24,7 +24,7 @@
 | 河南 |                                                                                                                                                                                         | 10.254.185.70:15970                                                                |                             |
 | 河北 | 192.168.30.150:8027                                                                                                                                                                     | 10.7.50.172:8027（唐山）                                                           |                             |
 | 山东 |                                                                                                                                                                                         | 124.132.240.66:15970<br>61.156.103.83:8027（青岛）<br>119.184.120.108:8027（日照） |                             |
-| 山西 |                                                                                                                                                                                         | 10.112.7.159:8027                                                                  |                             |
+| 山西 | 10.56.17.68:8072                                                                                                                                                                        | 10.112.7.159:8027                                                                  |                             |
 | 陕西 | 113.136.29.140:8027（西安）<br>113.136.242.134:8027（西安）                                                                                                                             |                                                                                    |                             |
 | 广东 | 183.59.160.61:8027（深圳）<br>183.59.168.166:8027（东莞）                                                                                                                               |                                                                                    |                             |
 | 广西 | 180.141.207.228:8027<br>180.141.206.228:8027<br>113.15.79.82:8027<br>171.104.238.90:8027（柳州）<br>10.255.136.86:8027（柳州）<br>10.255.165.82:8027（防城港）                          |                                                                                    |                             |

src/http_fetch.c

@@ -145,17 +145,12 @@ static int build_fetch_command(char *buf, size_t bufsize,
 
     if (tool == HTTP_TOOL_CURL)
     {
-        /* curl command */
         ret = snprintf(buf, bufsize,
-                       "curl -L -f -s -S --max-time %d --connect-timeout 10 -o '%s' '%s' 2>&1; echo \"EXIT_CODE:$?\"",
+                       "curl -L -f -s -S -k --max-time %d --connect-timeout 10 -o '%s' '%s' 2>&1; echo \"EXIT_CODE:$?\"",
                        timeout, output_file, url);
     }
     else /* HTTP_TOOL_UCLIENT_FETCH */
     {
-        /* uclient-fetch command
-         * Note: uclient-fetch does not support following redirects (-L equivalent)
-         * and does not have separate connect/total timeout settings
-         */
         ret = snprintf(buf, bufsize,
                        "uclient-fetch -q -T %d -O '%s' '%s' 2>&1; echo \"EXIT_CODE:$?\"",
                        timeout, output_file, url);

src/snapshot.c

@@ -40,25 +40,25 @@ int snapshot_init(snapshot_context_t *ctx)
 
     memset(ctx, 0, sizeof(snapshot_context_t));
 
-    /* Create tmpfs mmap file for IDR frame accumulation */
-    char tmpfs_path[] = "/dev/shm/rtp2httpd_idr_frame_XXXXXX";
-    ctx->idr_frame_fd = mkstemp(tmpfs_path);
+    /* Create tmp mmap file for IDR frame accumulation */
+    char tmp_path[] = "/tmp/rtp2httpd_idr_frame_XXXXXX";
+    ctx->idr_frame_fd = mkstemp(tmp_path);
     if (ctx->idr_frame_fd < 0)
     {
-        logger(LOG_ERROR, "Snapshot: Failed to create tmpfs file: %s", strerror(errno));
+        logger(LOG_ERROR, "Snapshot: Failed to create tmp file: %s", strerror(errno));
         return -1;
     }
 
     /* Unlink immediately - file will be deleted when fd is closed */
-    unlink(tmpfs_path);
+    unlink(tmp_path);
 
     /* Set buffer capacity */
     ctx->idr_frame_capacity = SNAPSHOT_BUFFER_CAPACITY;
 
     /* Allocate mmap buffer */
     if (ftruncate(ctx->idr_frame_fd, ctx->idr_frame_capacity) < 0)
     {
-        logger(LOG_ERROR, "Snapshot: Failed to truncate tmpfs file: %s", strerror(errno));
+        logger(LOG_ERROR, "Snapshot: Failed to truncate tmp file: %s", strerror(errno));
         close(ctx->idr_frame_fd);
         return -1;
     }
@@ -68,7 +68,7 @@ int snapshot_init(snapshot_context_t *ctx)
                                ctx->idr_frame_fd, 0);
     if (ctx->idr_frame_mmap == MAP_FAILED)
     {
-        logger(LOG_ERROR, "Snapshot: Failed to mmap tmpfs file: %s", strerror(errno));
+        logger(LOG_ERROR, "Snapshot: Failed to mmap tmp file: %s", strerror(errno));
         close(ctx->idr_frame_fd);
         return -1;
     }
@@ -248,8 +248,8 @@ static int snapshot_convert_to_jpeg(int idr_frame_fd, size_t idr_frame_size,
     *jpeg_fd = -1;
     *jpeg_size = 0;
 
-    /* Create output file in tmpfs */
-    char output_path[] = "/dev/shm/rtp2httpd_jpeg_XXXXXX";
+    /* Create output file in /tmp */
+    char output_path[] = "/tmp/rtp2httpd_jpeg_XXXXXX";
     int output_fd = mkstemp(output_path);
     if (output_fd < 0)
     {

src/status.c

@@ -73,23 +73,24 @@ static void json_escape_string(const char *in, char *out, size_t out_sz)
 /* Global pointer to shared memory */
 status_shared_t *status_shared = NULL;
 
-/* Name for shared memory object */
-#define SHM_NAME "/rtp2httpd_status"
+/* Path for shared memory file in /tmp */
+static char shm_path[256] = {0};
 
 /**
  * Initialize status tracking system
- * Creates and maps shared memory, then immediately closes the file descriptor.
+ * Creates and maps shared memory file in /tmp, then immediately closes the file descriptor.
  * The mmap() mapping remains valid after close() per POSIX specification.
  */
 int status_init(void)
 {
   int fd;
 
-  /* Create shared memory object */
-  fd = shm_open(SHM_NAME, O_CREAT | O_RDWR, 0600);
+  /* Create shared memory file in /tmp */
+  snprintf(shm_path, sizeof(shm_path), "/tmp/rtp2httpd_status_%d", getpid());
+  fd = open(shm_path, O_CREAT | O_RDWR | O_EXCL, 0600);
   if (fd == -1)
   {
-    logger(LOG_ERROR, "Failed to create shared memory: %s", strerror(errno));
+    logger(LOG_ERROR, "Failed to create shared memory file: %s", strerror(errno));
     return -1;
   }
 
@@ -98,7 +99,7 @@ int status_init(void)
   {
     logger(LOG_ERROR, "Failed to set shared memory size: %s", strerror(errno));
     close(fd);
-    shm_unlink(SHM_NAME);
+    unlink(shm_path);
     return -1;
   }
 
@@ -109,7 +110,7 @@ int status_init(void)
   {
     logger(LOG_ERROR, "Failed to map shared memory: %s", strerror(errno));
     close(fd);
-    shm_unlink(SHM_NAME);
+    unlink(shm_path);
     return -1;
   }
 
@@ -158,7 +159,7 @@ int status_init(void)
             close(status_shared->worker_notification_pipes[j]);
         }
         munmap(status_shared, sizeof(status_shared_t));
-        shm_unlink(SHM_NAME);
+        unlink(shm_path);
         return -1;
       }
 
@@ -234,13 +235,13 @@ void status_cleanup(void)
     status_shared = NULL;
   }
 
-  /* Only worker 0 unlinks shared memory object
-   * shm_unlink() removes the shared memory object from the filesystem.
+  /* Only worker 0 unlinks shared memory file
+   * unlink() removes the shared memory file from the filesystem.
    * If called by a non-last worker, other workers would lose access to shared memory.
    * In the fork model, worker 0 is the main process and exits last. */
   if (worker_id == 0)
   {
-    shm_unlink(SHM_NAME);
+    unlink(shm_path);
     logger(LOG_DEBUG, "Status tracking cleaned up (worker 0 - shared resources destroyed)");
   }
   else