aio.c - OpenGrok cross reference for /openbmc/linux/fs/aio.c

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sdiffudifftextold (e3ee1e12..)new (002c8976..)

aio.c (e3ee1e123183ca9847e74b7b8e2694c9e3b817a6)	aio.c (002c8976ee537724b20a5e179d9b349309438836)
1/* 2 * An async IO implementation for Linux 3 * Written by Benjamin LaHaise <bcrl@kvack.org> 4 * 5 * Implements an efficient asynchronous io interface. 6 * 7 * Copyright 2000, 2001, 2002 Red Hat, Inc. All Rights Reserved. 8 * --- 1256 unchanged lines hidden (view full) --- 1265 * handle. May fail with -EINVAL if ctxp is not initialized, 1266 if the specified nr_events exceeds internal limits. May fail 1267 * with -EAGAIN if the specified nr_events exceeds the user's limit 1268 * of available events. May fail with -ENOMEM if insufficient kernel 1269 * resources are available. May fail with -EFAULT if an invalid 1270 * pointer is passed for ctxp. Will fail with -ENOSYS if not 1271 * implemented. 1272 */	1/* 2 * An async IO implementation for Linux 3 * Written by Benjamin LaHaise <bcrl@kvack.org> 4 * 5 * Implements an efficient asynchronous io interface. 6 * 7 * Copyright 2000, 2001, 2002 Red Hat, Inc. All Rights Reserved. 8 * --- 1256 unchanged lines hidden (view full) --- 1265 * handle. May fail with -EINVAL if ctxp is not initialized, 1266 if the specified nr_events exceeds internal limits. May fail 1267 * with -EAGAIN if the specified nr_events exceeds the user's limit 1268 * of available events. May fail with -ENOMEM if insufficient kernel 1269 * resources are available. May fail with -EFAULT if an invalid 1270 * pointer is passed for ctxp. Will fail with -ENOSYS if not 1271 * implemented. 1272 */
1273asmlinkage long sys_io_setup(unsigned nr_events, aio_context_t __user *ctxp)	1273SYSCALL_DEFINE2(io_setup, unsigned, nr_events, aio_context_t __user *, ctxp)
1274{ 1275 struct kioctx ioctx = NULL; 1276 unsigned long ctx; 1277 long ret; 1278 1279 ret = get_user(ctx, ctxp); 1280 if (unlikely(ret)) 1281 goto out; --- 21 unchanged lines hidden* (view full) --- 1303} 1304 1305/* sys_io_destroy: 1306 * Destroy the aio_context specified. May cancel any outstanding 1307 * AIOs and block on completion. Will fail with -ENOSYS if not 1308 * implemented. May fail with -EFAULT if the context pointed to 1309 * is invalid. 1310 */	1274{ 1275 struct kioctx ioctx = NULL; 1276 unsigned long ctx; 1277 long ret; 1278 1279 ret = get_user(ctx, ctxp); 1280 if (unlikely(ret)) 1281 goto out; --- 21 unchanged lines hidden* (view full) --- 1303} 1304 1305/* sys_io_destroy: 1306 * Destroy the aio_context specified. May cancel any outstanding 1307 * AIOs and block on completion. Will fail with -ENOSYS if not 1308 * implemented. May fail with -EFAULT if the context pointed to 1309 * is invalid. 1310 */
1311asmlinkage long sys_io_destroy(aio_context_t ctx)	1311SYSCALL_DEFINE1(io_destroy, aio_context_t, ctx)
1312{ 1313 struct kioctx ioctx = lookup_ioctx(ctx); 1314 if (likely(NULL != ioctx)) { 1315 io_destroy(ioctx); 1316 return 0; 1317 } 1318 pr_debug("EINVAL: io_destroy: invalid context id\n"); 1319 return -EINVAL; --- 337 unchanged lines hidden* (view full) --- 1657 * iocbpp[0] is not properly initialized, if the operation specified 1658 is invalid for the file descriptor in the iocb. May fail with 1659 * -EFAULT if any of the data structures point to invalid data. May 1660 * fail with -EBADF if the file descriptor specified in the first 1661 * iocb is invalid. May fail with -EAGAIN if insufficient resources 1662 * are available to queue any iocbs. Will return 0 if nr is 0. Will 1663 * fail with -ENOSYS if not implemented. 1664 */	1312{ 1313 struct kioctx ioctx = lookup_ioctx(ctx); 1314 if (likely(NULL != ioctx)) { 1315 io_destroy(ioctx); 1316 return 0; 1317 } 1318 pr_debug("EINVAL: io_destroy: invalid context id\n"); 1319 return -EINVAL; --- 337 unchanged lines hidden* (view full) --- 1657 * iocbpp[0] is not properly initialized, if the operation specified 1658 is invalid for the file descriptor in the iocb. May fail with 1659 * -EFAULT if any of the data structures point to invalid data. May 1660 * fail with -EBADF if the file descriptor specified in the first 1661 * iocb is invalid. May fail with -EAGAIN if insufficient resources 1662 * are available to queue any iocbs. Will return 0 if nr is 0. Will 1663 * fail with -ENOSYS if not implemented. 1664 */
1665asmlinkage long sys_io_submit(aio_context_t ctx_id, long nr, 1666 struct iocb __user * __user *iocbpp)	1665SYSCALL_DEFINE3(io_submit, aio_context_t, ctx_id, long, nr, 1666 struct iocb __user * __user *, iocbpp)
1667{ 1668 struct kioctx ctx; 1669 long ret = 0; 1670 int i; 1671 1672 if (unlikely(nr < 0)) 1673 return -EINVAL; 1674 --- 57 unchanged lines hidden* (view full) --- 1732 * the operation is successfully cancelled, the resulting event is 1733 * copied into the memory pointed to by result without being placed 1734 * into the completion queue and 0 is returned. May fail with 1735 * -EFAULT if any of the data structures pointed to are invalid. 1736 * May fail with -EINVAL if aio_context specified by ctx_id is 1737 * invalid. May fail with -EAGAIN if the iocb specified was not 1738 * cancelled. Will fail with -ENOSYS if not implemented. 1739 */	1667{ 1668 struct kioctx ctx; 1669 long ret = 0; 1670 int i; 1671 1672 if (unlikely(nr < 0)) 1673 return -EINVAL; 1674 --- 57 unchanged lines hidden* (view full) --- 1732 * the operation is successfully cancelled, the resulting event is 1733 * copied into the memory pointed to by result without being placed 1734 * into the completion queue and 0 is returned. May fail with 1735 * -EFAULT if any of the data structures pointed to are invalid. 1736 * May fail with -EINVAL if aio_context specified by ctx_id is 1737 * invalid. May fail with -EAGAIN if the iocb specified was not 1738 * cancelled. Will fail with -ENOSYS if not implemented. 1739 */
1740asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user iocb, 1741 struct io_event __user result)	1740SYSCALL_DEFINE3(io_cancel, aio_context_t, ctx_id, struct iocb __user , iocb, 1741 struct io_event __user , result)
1742{ 1743 int (cancel)(struct kiocb iocb, struct io_event res); 1744 struct kioctx ctx; 1745 struct kiocb kiocb; 1746 u32 key; 1747 int ret; 1748 1749 ret = get_user(key, &iocb->aio_key); --- 44 unchanged lines hidden* (view full) --- 1794 * if nr is out of range, if when is out of range. May fail with 1795 * -EFAULT if any of the memory specified to is invalid. May return 1796 * 0 or < min_nr if no events are available and the timeout specified 1797 * by when has elapsed, where when == NULL specifies an infinite 1798 * timeout. Note that the timeout pointed to by when is relative and 1799 * will be updated if not NULL and the operation blocks. Will fail 1800 * with -ENOSYS if not implemented. 1801 */	1742{ 1743 int (cancel)(struct kiocb iocb, struct io_event res); 1744 struct kioctx ctx; 1745 struct kiocb kiocb; 1746 u32 key; 1747 int ret; 1748 1749 ret = get_user(key, &iocb->aio_key); --- 44 unchanged lines hidden* (view full) --- 1794 * if nr is out of range, if when is out of range. May fail with 1795 * -EFAULT if any of the memory specified to is invalid. May return 1796 * 0 or < min_nr if no events are available and the timeout specified 1797 * by when has elapsed, where when == NULL specifies an infinite 1798 * timeout. Note that the timeout pointed to by when is relative and 1799 * will be updated if not NULL and the operation blocks. Will fail 1800 * with -ENOSYS if not implemented. 1801 */
1802asmlinkage long sys_io_getevents(aio_context_t ctx_id, 1803 long min_nr, 1804 long nr, 1805 struct io_event __user events, 1806 struct timespec __user timeout)	1802SYSCALL_DEFINE5(io_getevents, aio_context_t, ctx_id, 1803 long, min_nr, 1804 long, nr, 1805 struct io_event __user , events, 1806 struct timespec __user , timeout)
1807{ 1808 struct kioctx *ioctx = lookup_ioctx(ctx_id); 1809 long ret = -EINVAL; 1810 1811 if (likely(ioctx)) { 1812 if (likely(min_nr <= nr && min_nr >= 0 && nr >= 0)) 1813 ret = read_events(ioctx, min_nr, nr, events, timeout); 1814 put_ioctx(ioctx); 1815 } 1816 1817 asmlinkage_protect(5, ret, ctx_id, min_nr, nr, events, timeout); 1818 return ret; 1819} 1820 1821__initcall(aio_setup); 1822 1823EXPORT_SYMBOL(aio_complete); 1824EXPORT_SYMBOL(aio_put_req); 1825EXPORT_SYMBOL(wait_on_sync_kiocb);	1807{ 1808 struct kioctx *ioctx = lookup_ioctx(ctx_id); 1809 long ret = -EINVAL; 1810 1811 if (likely(ioctx)) { 1812 if (likely(min_nr <= nr && min_nr >= 0 && nr >= 0)) 1813 ret = read_events(ioctx, min_nr, nr, events, timeout); 1814 put_ioctx(ioctx); 1815 } 1816 1817 asmlinkage_protect(5, ret, ctx_id, min_nr, nr, events, timeout); 1818 return ret; 1819} 1820 1821__initcall(aio_setup); 1822 1823EXPORT_SYMBOL(aio_complete); 1824EXPORT_SYMBOL(aio_put_req); 1825EXPORT_SYMBOL(wait_on_sync_kiocb);

aio.c (e3ee1e123183ca9847e74b7b8e2694c9e3b817a6)	aio.c (002c8976ee537724b20a5e179d9b349309438836)
1/* 2 * An async IO implementation for Linux 3 * Written by Benjamin LaHaise <bcrl@kvack.org> 4 * 5 * Implements an efficient asynchronous io interface. 6 * 7 * Copyright 2000, 2001, 2002 Red Hat, Inc. All Rights Reserved. 8 * --- 1256 unchanged lines hidden (view full) --- 1265 * handle. May fail with -EINVAL if ctxp is not initialized, 1266 if the specified nr_events exceeds internal limits. May fail 1267 * with -EAGAIN if the specified nr_events exceeds the user's limit 1268 * of available events. May fail with -ENOMEM if insufficient kernel 1269 * resources are available. May fail with -EFAULT if an invalid 1270 * pointer is passed for ctxp. Will fail with -ENOSYS if not 1271 * implemented. 1272 */	1/* 2 * An async IO implementation for Linux 3 * Written by Benjamin LaHaise <bcrl@kvack.org> 4 * 5 * Implements an efficient asynchronous io interface. 6 * 7 * Copyright 2000, 2001, 2002 Red Hat, Inc. All Rights Reserved. 8 * --- 1256 unchanged lines hidden (view full) --- 1265 * handle. May fail with -EINVAL if ctxp is not initialized, 1266 if the specified nr_events exceeds internal limits. May fail 1267 * with -EAGAIN if the specified nr_events exceeds the user's limit 1268 * of available events. May fail with -ENOMEM if insufficient kernel 1269 * resources are available. May fail with -EFAULT if an invalid 1270 * pointer is passed for ctxp. Will fail with -ENOSYS if not 1271 * implemented. 1272 */
1273asmlinkage long sys_io_setup(unsigned nr_events, aio_context_t __user *ctxp)	1273SYSCALL_DEFINE2(io_setup, unsigned, nr_events, aio_context_t __user *, ctxp)
1274{ 1275 struct kioctx ioctx = NULL; 1276 unsigned long ctx; 1277 long ret; 1278 1279 ret = get_user(ctx, ctxp); 1280 if (unlikely(ret)) 1281 goto out; --- 21 unchanged lines hidden* (view full) --- 1303} 1304 1305/* sys_io_destroy: 1306 * Destroy the aio_context specified. May cancel any outstanding 1307 * AIOs and block on completion. Will fail with -ENOSYS if not 1308 * implemented. May fail with -EFAULT if the context pointed to 1309 * is invalid. 1310 */	1274{ 1275 struct kioctx ioctx = NULL; 1276 unsigned long ctx; 1277 long ret; 1278 1279 ret = get_user(ctx, ctxp); 1280 if (unlikely(ret)) 1281 goto out; --- 21 unchanged lines hidden* (view full) --- 1303} 1304 1305/* sys_io_destroy: 1306 * Destroy the aio_context specified. May cancel any outstanding 1307 * AIOs and block on completion. Will fail with -ENOSYS if not 1308 * implemented. May fail with -EFAULT if the context pointed to 1309 * is invalid. 1310 */
1311asmlinkage long sys_io_destroy(aio_context_t ctx)	1311SYSCALL_DEFINE1(io_destroy, aio_context_t, ctx)
1312{ 1313 struct kioctx ioctx = lookup_ioctx(ctx); 1314 if (likely(NULL != ioctx)) { 1315 io_destroy(ioctx); 1316 return 0; 1317 } 1318 pr_debug("EINVAL: io_destroy: invalid context id\n"); 1319 return -EINVAL; --- 337 unchanged lines hidden* (view full) --- 1657 * iocbpp[0] is not properly initialized, if the operation specified 1658 is invalid for the file descriptor in the iocb. May fail with 1659 * -EFAULT if any of the data structures point to invalid data. May 1660 * fail with -EBADF if the file descriptor specified in the first 1661 * iocb is invalid. May fail with -EAGAIN if insufficient resources 1662 * are available to queue any iocbs. Will return 0 if nr is 0. Will 1663 * fail with -ENOSYS if not implemented. 1664 */	1312{ 1313 struct kioctx ioctx = lookup_ioctx(ctx); 1314 if (likely(NULL != ioctx)) { 1315 io_destroy(ioctx); 1316 return 0; 1317 } 1318 pr_debug("EINVAL: io_destroy: invalid context id\n"); 1319 return -EINVAL; --- 337 unchanged lines hidden* (view full) --- 1657 * iocbpp[0] is not properly initialized, if the operation specified 1658 is invalid for the file descriptor in the iocb. May fail with 1659 * -EFAULT if any of the data structures point to invalid data. May 1660 * fail with -EBADF if the file descriptor specified in the first 1661 * iocb is invalid. May fail with -EAGAIN if insufficient resources 1662 * are available to queue any iocbs. Will return 0 if nr is 0. Will 1663 * fail with -ENOSYS if not implemented. 1664 */
1665asmlinkage long sys_io_submit(aio_context_t ctx_id, long nr, 1666 struct iocb __user * __user *iocbpp)	1665SYSCALL_DEFINE3(io_submit, aio_context_t, ctx_id, long, nr, 1666 struct iocb __user * __user *, iocbpp)
1667{ 1668 struct kioctx ctx; 1669 long ret = 0; 1670 int i; 1671 1672 if (unlikely(nr < 0)) 1673 return -EINVAL; 1674 --- 57 unchanged lines hidden* (view full) --- 1732 * the operation is successfully cancelled, the resulting event is 1733 * copied into the memory pointed to by result without being placed 1734 * into the completion queue and 0 is returned. May fail with 1735 * -EFAULT if any of the data structures pointed to are invalid. 1736 * May fail with -EINVAL if aio_context specified by ctx_id is 1737 * invalid. May fail with -EAGAIN if the iocb specified was not 1738 * cancelled. Will fail with -ENOSYS if not implemented. 1739 */	1667{ 1668 struct kioctx ctx; 1669 long ret = 0; 1670 int i; 1671 1672 if (unlikely(nr < 0)) 1673 return -EINVAL; 1674 --- 57 unchanged lines hidden* (view full) --- 1732 * the operation is successfully cancelled, the resulting event is 1733 * copied into the memory pointed to by result without being placed 1734 * into the completion queue and 0 is returned. May fail with 1735 * -EFAULT if any of the data structures pointed to are invalid. 1736 * May fail with -EINVAL if aio_context specified by ctx_id is 1737 * invalid. May fail with -EAGAIN if the iocb specified was not 1738 * cancelled. Will fail with -ENOSYS if not implemented. 1739 */
1740asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user iocb, 1741 struct io_event __user result)	1740SYSCALL_DEFINE3(io_cancel, aio_context_t, ctx_id, struct iocb __user , iocb, 1741 struct io_event __user , result)
1742{ 1743 int (cancel)(struct kiocb iocb, struct io_event res); 1744 struct kioctx ctx; 1745 struct kiocb kiocb; 1746 u32 key; 1747 int ret; 1748 1749 ret = get_user(key, &iocb->aio_key); --- 44 unchanged lines hidden* (view full) --- 1794 * if nr is out of range, if when is out of range. May fail with 1795 * -EFAULT if any of the memory specified to is invalid. May return 1796 * 0 or < min_nr if no events are available and the timeout specified 1797 * by when has elapsed, where when == NULL specifies an infinite 1798 * timeout. Note that the timeout pointed to by when is relative and 1799 * will be updated if not NULL and the operation blocks. Will fail 1800 * with -ENOSYS if not implemented. 1801 */	1742{ 1743 int (cancel)(struct kiocb iocb, struct io_event res); 1744 struct kioctx ctx; 1745 struct kiocb kiocb; 1746 u32 key; 1747 int ret; 1748 1749 ret = get_user(key, &iocb->aio_key); --- 44 unchanged lines hidden* (view full) --- 1794 * if nr is out of range, if when is out of range. May fail with 1795 * -EFAULT if any of the memory specified to is invalid. May return 1796 * 0 or < min_nr if no events are available and the timeout specified 1797 * by when has elapsed, where when == NULL specifies an infinite 1798 * timeout. Note that the timeout pointed to by when is relative and 1799 * will be updated if not NULL and the operation blocks. Will fail 1800 * with -ENOSYS if not implemented. 1801 */
1802asmlinkage long sys_io_getevents(aio_context_t ctx_id, 1803 long min_nr, 1804 long nr, 1805 struct io_event __user events, 1806 struct timespec __user timeout)	1802SYSCALL_DEFINE5(io_getevents, aio_context_t, ctx_id, 1803 long, min_nr, 1804 long, nr, 1805 struct io_event __user , events, 1806 struct timespec __user , timeout)
1807{ 1808 struct kioctx *ioctx = lookup_ioctx(ctx_id); 1809 long ret = -EINVAL; 1810 1811 if (likely(ioctx)) { 1812 if (likely(min_nr <= nr && min_nr >= 0 && nr >= 0)) 1813 ret = read_events(ioctx, min_nr, nr, events, timeout); 1814 put_ioctx(ioctx); 1815 } 1816 1817 asmlinkage_protect(5, ret, ctx_id, min_nr, nr, events, timeout); 1818 return ret; 1819} 1820 1821__initcall(aio_setup); 1822 1823EXPORT_SYMBOL(aio_complete); 1824EXPORT_SYMBOL(aio_put_req); 1825EXPORT_SYMBOL(wait_on_sync_kiocb);	1807{ 1808 struct kioctx *ioctx = lookup_ioctx(ctx_id); 1809 long ret = -EINVAL; 1810 1811 if (likely(ioctx)) { 1812 if (likely(min_nr <= nr && min_nr >= 0 && nr >= 0)) 1813 ret = read_events(ioctx, min_nr, nr, events, timeout); 1814 put_ioctx(ioctx); 1815 } 1816 1817 asmlinkage_protect(5, ret, ctx_id, min_nr, nr, events, timeout); 1818 return ret; 1819} 1820 1821__initcall(aio_setup); 1822 1823EXPORT_SYMBOL(aio_complete); 1824EXPORT_SYMBOL(aio_put_req); 1825EXPORT_SYMBOL(wait_on_sync_kiocb);