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fs/vfs: Added support for checking if a descriptor is a socket in fstat().

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This commit is contained in:
Pelle Windestam 2018-04-26 06:49:13 -06:00 committed by Gregory Nutt
parent f3a8e01557
commit 0c963449d6
2 changed files with 40 additions and 16 deletions
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26
fs/vfs/fs_fstat.c
View File

@ -1,7 +1,7 @@
/****************************************************************************
* fs/vfs/fs_fstat.c
*
* Copyright (C) 2017 Gregory Nutt. All rights reserved.
* Copyright (C) 2017-2018 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@ -43,6 +43,8 @@
#include <sched.h>
#include <errno.h>
#include <sys/stat.h>
#include <nuttx/fs/fs.h>
#include "inode/inode.h"
@ -82,10 +84,32 @@ int fstat(int fd, FAR struct stat *buf)
if ((unsigned int)fd >= CONFIG_NFILE_DESCRIPTORS)
{
#if defined(CONFIG_NET_TCP) && CONFIG_NSOCKET_DESCRIPTORS > 0
if (sockfd_socket(fd) == NULL)
{
ret = -EBADF;
goto errout;
}
else
{
memset(buf, 0, sizeof(struct stat));
buf->st_mode = S_IFSOCK;
#ifdef CONFIG_NET_ETHERNET
/* REVISIT: Ideally, we would get the MTU from the device that
* serves the connection (assuming the socket is connected).
*/
buf->st_blksize = CONFIG_NET_ETH_MTU;
#endif
return OK;
}
#else
/* No networking... it is a bad descriptor in any event */
ret = -EBADF;
goto errout;
#endif
}
/* The descriptor is in a valid range to file descriptor... do the

30
include/sys/stat.h
View File

@ -1,7 +1,7 @@
/****************************************************************************
* include/sys/stat.h
*
* Copyright (C) 2007-2009, 2012 Gregory Nutt. All rights reserved.
* Copyright (C) 2007-2009, 2012, 2018 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@ -58,8 +58,8 @@
* Bits 0-2: Permissions for others
* Bits 3-5: Group permissions
* Bits 6-8: Owner permissions
* Bits 9-11: Not used
* Bits 12-14: File type bits
* Bits 9-10: Not used
* Bits 11-14: File type bits
* Bit 15: Symbolic link
*/
@ -82,19 +82,19 @@
#define S_ISGID 0 /* Set group ID bit (not used)*/
#define S_ISUID 0 /* Set UID bit (not used) */
#define S_IFIFO 0 /* Bits 12-14: File type bits (not all used) */
#define S_IFCHR (1 << 12)
#define S_IFDIR (2 << 12)
#define S_IFBLK (3 << 12)
#define S_IFREG (4 << 12)
#define S_IFSOCK 0
#define S_IFMQ (5 << 12)
#define S_IFSEM (6 << 12)
#define S_IFSHM (7 << 12)
#define s_IFTGT (7 << 12) /* May be the target of a symbolic link */
#define S_IFIFO 0 /* Bits 11-14: File type bits (not all used) */
#define S_IFCHR (1 << 11)
#define S_IFDIR (2 << 11)
#define S_IFBLK (3 << 11)
#define S_IFREG (4 << 11)
#define S_IFMQ (5 << 11)
#define S_IFSEM (6 << 11)
#define S_IFSHM (7 << 11)
#define S_IFSOCK (8 << 11)
#define s_IFTGT (15 << 11) /* May be the target of a symbolic link */
#define S_IFLNK (1 << 15) /* Bit 15: Symbolic link */
#define S_IFMT (15 << 15) /* Bits 12-15: Full file type */
#define S_IFMT (31 << 11) /* Bits 11-15: Full file type */
/* File type macros that operate on an instance of mode_t */
@ -104,7 +104,7 @@
#define S_ISDIR(m) (((m) & s_IFTGT) == S_IFDIR)
#define S_ISBLK(m) (((m) & s_IFTGT) == S_IFBLK)
#define S_ISREG(m) (((m) & s_IFTGT) == S_IFREG)
#define S_ISSOCK(m) (0)
#define S_ISSOCK(m) (((m) & s_IFTGT) == S_IFSOCK)
#define S_ISMQ(m) (((m) & s_IFTGT) == S_IFMQ)
#define S_ISSEM(m) (((m) & s_IFTGT) == S_IFSEM)
#define S_ISSHM(m) (((m) & s_IFTGT) == S_IFSHM)