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libio: Add rtems_libio_iop_is_writeable()

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Update #3132.
This commit is contained in:
Sebastian Huber
2017-09-13 10:36:11 +02:00
parent a937a5a534
commit 3cffd66d76
3 changed files with 13 additions and 3 deletions
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10
cpukit/libcsupport/include/rtems/libio.h
View File

@@ -1399,6 +1399,16 @@ static inline bool rtems_libio_iop_is_readable( const rtems_libio_t *iop )
return ( rtems_libio_iop_flags( iop ) & LIBIO_FLAGS_READ ) != 0;
}
/**
* @brief Returns true if this is a writeable iop, otherwise returns false.
*
* @param[in] iop The iop.
*/
static inline bool rtems_libio_iop_is_writeable( const rtems_libio_t *iop )
{
return ( rtems_libio_iop_flags( iop ) & LIBIO_FLAGS_WRITE ) != 0;
}
/**
* @name External I/O Handlers
*/

2
cpukit/libfs/src/imfs/imfs_linfile.c
View File

@@ -56,7 +56,7 @@ static int IMFS_linfile_open(
/*
* Perform 'copy on write' for linear files
*/
if ((iop->flags & LIBIO_FLAGS_WRITE) != 0) {
if (rtems_libio_iop_is_writeable(iop)) {
uint32_t count = file->File.size;
const unsigned char *buffer = file->Linearfile.direct;

4
cpukit/libnetworking/lib/ftpfs.c
View File

@@ -1032,11 +1032,11 @@ static int rtems_ftpfs_open(
bool verbose = me->verbose;
const struct timeval *timeout = &me->timeout;
e->write = (iop->flags & LIBIO_FLAGS_WRITE) != 0;
e->write = rtems_libio_iop_is_writeable(iop);
/* Check for either read-only or write-only flags */
if (
(iop->flags & LIBIO_FLAGS_WRITE) != 0
rtems_libio_iop_is_writeable(iop)
&& rtems_libio_iop_is_readable(iop)
) {
eno = ENOTSUP;