sandbox: Add CONFIG_OF_HOSTFILE to read FDT from host file

[u-boot] / arch / sandbox / cpu / os.c

diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c
index 36637af6ce4c578a19e4133025822afe82ec6001..d07540776cc6a8d32fb58a18e752c738c761a06d 100644 (file)
--- a/arch/sandbox/cpu/os.c
+++ b/arch/sandbox/cpu/os.c
@@ -19,10 +19,13 @@
  * MA 02111-1307 USA
  */
 
+#include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <getopt.h>
+#include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <termios.h>
 #include <time.h>
 #include <unistd.h>
@@ -44,6 +47,14 @@ ssize_t os_read(int fd, void *buf, size_t count)
        return read(fd, buf, count);
 }
 
+ssize_t os_read_no_block(int fd, void *buf, size_t count)
+{
+       const int flags = fcntl(fd, F_GETFL, 0);
+
+       fcntl(fd, F_SETFL, flags | O_NONBLOCK);
+       return os_read(fd, buf, count);
+}
+
 ssize_t os_write(int fd, const void *buf, size_t count)
 {
        return write(fd, buf, count);
@@ -253,3 +264,101 @@ int os_parse_args(struct sandbox_state *state, int argc, char *argv[])
 
        return 0;
 }
+
+void os_dirent_free(struct os_dirent_node *node)
+{
+       struct os_dirent_node *next;
+
+       while (node) {
+               next = node->next;
+               free(node);
+               node = next;
+       }
+}
+
+int os_dirent_ls(const char *dirname, struct os_dirent_node **headp)
+{
+       struct dirent entry, *result;
+       struct os_dirent_node *head, *node, *next;
+       struct stat buf;
+       DIR *dir;
+       int ret;
+       char *fname;
+       int len;
+
+       *headp = NULL;
+       dir = opendir(dirname);
+       if (!dir)
+               return -1;
+
+       /* Create a buffer for the maximum filename length */
+       len = sizeof(entry.d_name) + strlen(dirname) + 2;
+       fname = malloc(len);
+       if (!fname) {
+               ret = -ENOMEM;
+               goto done;
+       }
+
+       for (node = head = NULL;; node = next) {
+               ret = readdir_r(dir, &entry, &result);
+               if (ret || !result)
+                       break;
+               next = malloc(sizeof(*node) + strlen(entry.d_name) + 1);
+               if (!next) {
+                       os_dirent_free(head);
+                       ret = -ENOMEM;
+                       goto done;
+               }
+               strcpy(next->name, entry.d_name);
+               switch (entry.d_type) {
+               case DT_REG:
+                       next->type = OS_FILET_REG;
+                       break;
+               case DT_DIR:
+                       next->type = OS_FILET_DIR;
+                       break;
+               case DT_LNK:
+                       next->type = OS_FILET_LNK;
+                       break;
+               }
+               next->size = 0;
+               snprintf(fname, len, "%s/%s", dirname, next->name);
+               if (!stat(fname, &buf))
+                       next->size = buf.st_size;
+               if (node)
+                       node->next = next;
+               if (!head)
+                       head = node;
+       }
+       *headp = head;
+
+done:
+       closedir(dir);
+       return ret;
+}
+
+const char *os_dirent_typename[OS_FILET_COUNT] = {
+       "   ",
+       "SYM",
+       "DIR",
+       "???",
+};
+
+const char *os_dirent_get_typename(enum os_dirent_t type)
+{
+       if (type >= 0 && type < OS_FILET_COUNT)
+               return os_dirent_typename[type];
+
+       return os_dirent_typename[OS_FILET_UNKNOWN];
+}
+
+ssize_t os_get_filesize(const char *fname)
+{
+       struct stat buf;
+       int ret;
+
+       ret = stat(fname, &buf);
+       if (ret)
+               return ret;
+       return buf.st_size;
+}