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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2017-09-13 09:22:19 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2017-09-15 10:29:34 +0200 |
| commit | baef823cd550449bfbcc36625b9571389d8ad1af (patch) | |
| tree | 238c1952d23dc09d41ae99d186d0656f78ed857b /cpukit/libcsupport/include/rtems/libio.h | |
| parent | libio: Unify readv() and writev() (diff) | |
| download | rtems-baef823cd550449bfbcc36625b9571389d8ad1af.tar.bz2 | |
libio: Add hold/drop iop reference
Check iop reference count in close() and return -1 with errno set to
EBUSY in case the file descriptor is still in use.
Update #3132.
Diffstat (limited to 'cpukit/libcsupport/include/rtems/libio.h')
| -rw-r--r-- | cpukit/libcsupport/include/rtems/libio.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/cpukit/libcsupport/include/rtems/libio.h b/cpukit/libcsupport/include/rtems/libio.h index 2a67496800..804929915a 100644 --- a/cpukit/libcsupport/include/rtems/libio.h +++ b/cpukit/libcsupport/include/rtems/libio.h @@ -37,6 +37,7 @@ #include <rtems.h> #include <rtems/fs.h> #include <rtems/chain.h> +#include <rtems/score/atomic.h> #ifdef __cplusplus extern "C" { @@ -1319,7 +1320,7 @@ extern const rtems_filesystem_limits_and_options_t struct rtems_libio_tt { rtems_driver_name_t *driver; off_t offset; /* current offset into file */ - uint32_t flags; + Atomic_Uint flags; rtems_filesystem_location_info_t pathinfo; uint32_t data0; /* private to "driver" */ void *data1; /* ... */ @@ -1371,12 +1372,13 @@ typedef struct { #define LIBIO_FLAGS_APPEND 0x0200U /* all writes append */ #define LIBIO_FLAGS_CLOSE_ON_EXEC 0x0800U /* close on process exec() */ #define LIBIO_FLAGS_READ_WRITE (LIBIO_FLAGS_READ | LIBIO_FLAGS_WRITE) +#define LIBIO_FLAGS_REFERENCE_INC 0x1000U /** @} */ -static inline uint32_t rtems_libio_iop_flags( const rtems_libio_t *iop ) +static inline unsigned int rtems_libio_iop_flags( const rtems_libio_t *iop ) { - return iop->flags; + return _Atomic_Load_uint( &iop->flags, ATOMIC_ORDER_RELAXED ); } /** |