X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Fos.h;h=038aba9e4fe02c8e5764d48e866507d2832f325e;hb=412665b46134f93464c09405e02f08ac9c62526d;hp=45729c1e44f67f5176dbc161dc2fca12feaa10f9;hpb=70db4212fcdb080444a23dccaf673b68a3ffc1fa;p=platform%2Fkernel%2Fu-boot.git

diff --git a/include/os.h b/include/os.h
index 45729c1..038aba9 100644
--- a/include/os.h
+++ b/include/os.h
@@ -40,6 +40,16 @@ struct sandbox_state;
 ssize_t os_read(int fd, void *buf, size_t count);
 
 /**
+ * Access to the OS read() system call with non-blocking access
+ *
+ * \param fd	File descriptor as returned by os_open()
+ * \param buf	Buffer to place data
+ * \param count	Number of bytes to read
+ * \return number of bytes read, or -1 on error
+ */
+ssize_t os_read_no_block(int fd, void *buf, size_t count);
+
+/**
  * Access to the OS write() system call
  *
  * \param fd	File descriptor as returned by os_open()
@@ -95,7 +105,7 @@ int os_close(int fd);
  *
  * @param exit_code	exit code for U-Boot
  */
-void os_exit(int exit_code);
+void os_exit(int exit_code) __attribute__((noreturn));
 
 /**
  * Put tty into raw mode to mimic serial console better
@@ -136,4 +146,52 @@ u64 os_get_nsec(void);
  */
 int os_parse_args(struct sandbox_state *state, int argc, char *argv[]);
 
+/*
+ * Types of directory entry that we support. See also os_dirent_typename in
+ * the C file.
+ */
+enum os_dirent_t {
+	OS_FILET_REG,		/* Regular file */
+	OS_FILET_LNK,		/* Symbolic link */
+	OS_FILET_DIR,		/* Directory */
+	OS_FILET_UNKNOWN,	/* Something else */
+
+	OS_FILET_COUNT,
+};
+
+/** A directory entry node, containing information about a single dirent */
+struct os_dirent_node {
+	struct os_dirent_node *next;	/* Pointer to next node, or NULL */
+	ulong size;			/* Size of file in bytes */
+	enum os_dirent_t type;		/* Type of entry */
+	char name[0];			/* Name of entry */
+};
+
+/**
+ * Get a directionry listing
+ *
+ * This allocates and returns a linked list containing the directory listing.
+ *
+ * @param dirname	Directory to examine
+ * @param headp		Returns pointer to head of linked list, or NULL if none
+ * @return 0 if ok, -ve on error
+ */
+int os_dirent_ls(const char *dirname, struct os_dirent_node **headp);
+
+/**
+ * Get the name of a directory entry type
+ *
+ * @param type		Type to cehck
+ * @return string containing the name of that type, or "???" if none/invalid
+ */
+const char *os_dirent_get_typename(enum os_dirent_t type);
+
+/**
+ * Get the size of a file
+ *
+ * @param fname		Filename to check
+ * @return size of file, or -1 if an error ocurred
+ */
+ssize_t os_get_filesize(const char *fname);
+
 #endif