error.h: Remove unused E_CHDIR.

[paraslash.git] / fd.c

diff --git a/fd.c b/fd.c
index f9b3d9d003abe88599f437bcc1aa46424bc99dc8..8f506ff83044dd23ec098961d9607908bc7ce402 100644 (file)
--- a/fd.c
+++ b/fd.c
@@ -60,6 +60,24 @@ int para_select(int n, fd_set *readfds, fd_set *writefds,
        return ret;
 }
 
+/**
+ * Set a file descriptor to blocking mode.
+ *
+ * \param fd The file descriptor.
+ *
+ * \return Standard.
+ */
+int mark_fd_blocking(int fd)
+{
+       int flags = fcntl(fd, F_GETFL);
+       if (flags < 0)
+               return -ERRNO_TO_PARA_ERROR(errno);
+       flags = fcntl(fd, F_SETFL, ((long)flags) & ~O_NONBLOCK);
+       if (flags < 0)
+               return -ERRNO_TO_PARA_ERROR(errno);
+       return 1;
+}
+
 /**
  * Set a file descriptor to non-blocking mode.
  *
@@ -67,7 +85,7 @@ int para_select(int n, fd_set *readfds, fd_set *writefds,
  *
  * \return Standard.
  */
-int mark_fd_nonblock(int fd)
+int mark_fd_nonblocking(int fd)
 {
        int flags = fcntl(fd, F_GETFL);
        if (flags < 0)
@@ -281,14 +299,19 @@ int para_mkdir(const char *path, mode_t mode)
 }
 
 /**
- * Map a file into memory.
+ * Open a file and map it into memory.
  *
  * \param path Name of the regular file to map.
  * \param open_mode Either \p O_RDONLY or \p O_RDWR.
- * \param obj On success, the mapping is returned here.
+ * \param map On success, the mapping is returned here.
+ * \param size size of the mapping.
+ * \param fd_ptr The file descriptor of the mapping.
  *
- * \return Positive on success, negative on errors. Possible errors include: \p
- * E_FSTAT, any errors returned by para_open(), \p E_EMPTY, \p E_MMAP.
+ * If \a fd_ptr is \p NULL, the file descriptor resulting from the underlying
+ * open call is closed after mmap().  Otherwise the file is kept open and the
+ * file descriptor is returned in \a fd_ptr.
+ *
+ * \return Standard.
  *
  * \sa para_open(), mmap(2).
  */