Introduce new shared function remote_fileio_to_fio_error

This commit introduces a new shared function to replace three
identical functions in various places in the codebase.

gdb/ChangeLog:

	* common/common-remote-fileio.h (remote_fileio_to_fio_error):
	New declaration.
	* common/common-remote-fileio.c (remote_fileio_to_fio_error):
	New function, factored out the named functions below.
	* inf-child.c (gdb/fileio.h): Remove include.
	(common-remote-fileio.h): New include.
	(inf_child_errno_to_fileio_error): Remove function.  Update
	all callers to use remote_fileio_to_fio_error.
	* remote-fileio.c (remote_fileio_errno_to_target): Likewise.

gdb/gdbserver/ChangeLog:

	* hostio-errno.c (errno_to_fileio_error): Remove function.
	Update caller to use remote_fileio_to_fio_error.

2 files changed, 58 insertions, 0 deletions

diff --git a/gdb/common/common-remote-fileio.c b/gdb/common/common-remote-fileio.c
index f78b3f7..30c2c6b 100644
--- a/gdb/common/common-remote-fileio.c
+++ b/gdb/common/common-remote-fileio.c
@@ -21,6 +21,59 @@
 #include "common-remote-fileio.h"
 #include <sys/stat.h>
 
+/* See common-remote-fileio.h.  */
+
+int
+remote_fileio_to_fio_error (int error)
+{
+  switch (error)
+    {
+      case EPERM:
+        return FILEIO_EPERM;
+      case ENOENT:
+        return FILEIO_ENOENT;
+      case EINTR:
+        return FILEIO_EINTR;
+      case EIO:
+        return FILEIO_EIO;
+      case EBADF:
+        return FILEIO_EBADF;
+      case EACCES:
+        return FILEIO_EACCES;
+      case EFAULT:
+        return FILEIO_EFAULT;
+      case EBUSY:
+        return FILEIO_EBUSY;
+      case EEXIST:
+        return FILEIO_EEXIST;
+      case ENODEV:
+        return FILEIO_ENODEV;
+      case ENOTDIR:
+        return FILEIO_ENOTDIR;
+      case EISDIR:
+        return FILEIO_EISDIR;
+      case EINVAL:
+        return FILEIO_EINVAL;
+      case ENFILE:
+        return FILEIO_ENFILE;
+      case EMFILE:
+        return FILEIO_EMFILE;
+      case EFBIG:
+        return FILEIO_EFBIG;
+      case ENOSPC:
+        return FILEIO_ENOSPC;
+      case ESPIPE:
+        return FILEIO_ESPIPE;
+      case EROFS:
+        return FILEIO_EROFS;
+      case ENOSYS:
+        return FILEIO_ENOSYS;
+      case ENAMETOOLONG:
+        return FILEIO_ENAMETOOLONG;
+    }
+  return FILEIO_EUNKNOWN;
+}
+
 /* Convert a host-format mode_t into a bitmask of File-I/O flags.  */
 
 static LONGEST
diff --git a/gdb/common/common-remote-fileio.h b/gdb/common/common-remote-fileio.h
index 27bc585..96e4aa5 100644
--- a/gdb/common/common-remote-fileio.h
+++ b/gdb/common/common-remote-fileio.h
@@ -23,6 +23,11 @@
 #include "gdb/fileio.h"
 #include <sys/stat.h>
 
+/* Convert a errno error number to a File-I/O error number for
+   transmission over the remote protocol.  */
+
+extern int remote_fileio_to_fio_error (int error);
+
 /* Pack a host-format integer into a byte buffer in big-endian format
    ready for transmission over the remote protocol.  BYTES specifies
    the size of the integer to pack in bytes.  */