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-rw-r--r--src/sys/include/os/filedesc.h24
-rw-r--r--src/sys/os/os_filedes.c22
2 files changed, 28 insertions, 18 deletions
diff --git a/src/sys/include/os/filedesc.h b/src/sys/include/os/filedesc.h
index b773de9..95400ed 100644
--- a/src/sys/include/os/filedesc.h
+++ b/src/sys/include/os/filedesc.h
@@ -52,6 +52,18 @@ struct filedesc {
};
/*
+ * Allocate a file descriptor from a specific process's
+ * file descriptor table
+ *
+ * @procp: Process to allocate fd from
+ * @fd_res: Result pointer is written here
+ *
+ * Returns zero on success, otherwise a less than
+ * zero value upon failure
+ */
+int fd_alloc(struct proc *procp, struct filedesc **fd_res);
+
+/*
* Duplicate a file descriptor
*
* @procp: Process to duplicate from
@@ -63,6 +75,18 @@ struct filedesc {
struct filedesc *fd_dup(struct proc *procp, int fd);
/*
+ * Look up a file descriptor that belongs to a specific
+ * process by using its fd number
+ *
+ * @procp: Process to look up
+ * @fd: File descriptor number
+ *
+ * Returns the file descriptor pointer on success,
+ * otherwise a less than zero value on failure
+ */
+struct filedesc *fd_get(struct proc *procp, int fd);
+
+/*
* Initialize a process file descriptor table
* and set up standard streams
*
diff --git a/src/sys/os/os_filedes.c b/src/sys/os/os_filedes.c
index 36748a6..3eaee0d 100644
--- a/src/sys/os/os_filedes.c
+++ b/src/sys/os/os_filedes.c
@@ -44,16 +44,9 @@
#define STDOUT_FILENO 1
/*
- * Allocate a file descriptor from a specific process's
- * file descriptor table
- *
- * @procp: Process to allocate fd from
- * @fd_res: Result pointer is written here
- *
- * Returns zero on success, otherwise a less than
- * zero value upon failure
+ * Allocate a file descriptor
*/
-static int
+int
fd_alloc(struct proc *procp, struct filedesc **fd_res)
{
struct filedesc *fd;
@@ -91,16 +84,9 @@ fd_alloc(struct proc *procp, struct filedesc **fd_res)
}
/*
- * Look up a file descriptor that belongs to a specific
- * process by using its fd number
- *
- * @procp: Process to look up
- * @fd: File descriptor number
- *
- * Returns the file descriptor pointer on success,
- * otherwise a less than zero value on failure
+ * Get a file descriptor
*/
-static struct filedesc *
+struct filedesc *
fd_get(struct proc *procp, int fd)
{
struct filedesc *fdp;