src/xcalls/x_dup.c File Reference

x_dup implementation. More...

#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <misc/debug.h>
#include <core/tx.h>
#include <core/config.h>
#include <core/koa.h>
#include <core/buffer.h>
#include <core/stats.h>
#include <libc/syscalls.h>
#include <core/txdesc.h>
#include <xcalls/xcalls.h>

Go to the source code of this file.

Classes
struct	x_dup_undo_args_s
Typedefs
typedef x_dup_undo_args_s	x_dup_undo_args_t
Functions
int XCALL_DEF()	x_dup (int oldfd, int *result)
	Duplicates a file descriptor.

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Detailed Description

x_dup implementation.

Definition in file x_dup.c.

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Function Documentation

int XCALL_DEF() x_dup	(	int	oldfd,
		int *	result
	)

Duplicates a file descriptor.

The new file descriptor shares the sentinels of the original file descriptor.

Execution : in-place

Asynchronous failures: abort

Parameters:

[in]	oldfd	The original file descriptor to be duplicated.
[out]	result	Where to store any asynchronous failures.

Returns:

The new file descriptor on success, or -1 if a synchronous failure occurred (in which case, errno is set appropriately).

Definition at line 67 of file x_dup.c.

References x_dup_undo_args_s::fd, x_dup_undo_args_s::koa, txc_buffer_linear_malloc(), txc_g_koamgr, TXC_INTERNALERROR, txc_koa_attach_fd(), txc_koa_get_sentinel(), txc_koa_lock_fd(), txc_koa_lock_fds_refby_koa(), txc_koa_lookup_fd2koa(), txc_koa_unlock_fd(), txc_koa_unlock_fds_refby_koa(), TXC_R_BUSYSENTINEL, TXC_R_FAILURE, TXC_SENTINEL_ACQUIREONRETRY, txc_sentinel_tryacquire(), txc_stats_txstat_increment, txc_tx_abort_transaction(), txc_tx_get_txd(), txc_tx_get_xactstate(), txc_tx_register_undo_action(), TXC_TX_REGULAR_UNDO_ACTION_ORDER, and x_dup().

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