Moved intercept code to a library module to allow it to be used by

test/bbackupd as well (refs #3)

1 files changed, 0 insertions, 276 deletions

diff --git a/test/raidfile/intercept.cpp b/test/raidfile/intercept.cpp
deleted file mode 100644
index 0a5b4ab9..00000000
--- a/test/raidfile/intercept.cpp
+++ /dev/null
@@ -1,276 +0,0 @@
-// --------------------------------------------------------------------------
-//
-// File
-//		Name:    intercept.cpp
-//		Purpose: Syscall interception code for the raidfile test
-//		Created: 2003/07/22
-//
-// --------------------------------------------------------------------------
-
-#include "Box.h"
-
-#ifdef HAVE_SYS_SYSCALL_H
-	#include <sys/syscall.h>
-#endif
-#include <sys/types.h>
-#include <unistd.h>
-
-#ifdef HAVE_SYS_UIO_H
-#include <sys/uio.h>
-#endif
-
-#include <errno.h>
-
-#ifndef PLATFORM_CLIB_FNS_INTERCEPTION_IMPOSSIBLE
-
-#if !defined(HAVE_SYSCALL) && !defined(HAVE___SYSCALL) && !defined(HAVE___SYSCALL_NEED_DEFN)
-	#define PLATFORM_NO_SYSCALL
-#endif
-
-#ifdef PLATFORM_NO_SYSCALL
-	// For some reason, syscall just doesn't work on Darwin
-	// so instead, we build functions using assembler in a varient
-	// of the technique used in the Darwin Libc
-	extern "C" int
-	TEST_open(const char *path, int flags, mode_t mode);
-	extern "C" int
-	TEST_close(int d);
-	extern "C" ssize_t
-	TEST_write(int d, const void *buf, size_t nbytes);
-	extern "C" ssize_t
-	TEST_read(int d, void *buf, size_t nbytes);
-	extern "C" ssize_t
-	TEST_readv(int d, const struct iovec *iov, int iovcnt);
-	extern "C" off_t
-	TEST_lseek(int fildes, off_t offset, int whence);
-#else
-	#ifdef HAVE___SYSCALL_NEED_DEFN
-		// Need this, not declared in syscall.h nor unistd.h
-		extern "C" off_t __syscall(quad_t number, ...);
-	#endif
-	#ifndef HAVE_SYSCALL
-		#undef syscall
-		#define syscall __syscall
-	#endif
-#endif
-
-#include <string.h>
-#include <stdio.h>
-
-#include "MemLeakFindOn.h"
-
-bool intercept_enabled = false;
-const char *intercept_filename = 0;
-int intercept_filedes = -1;
-off_t intercept_errorafter = 0;
-int intercept_errno = 0;
-int intercept_syscall = 0;
-off_t intercept_filepos = 0;
-
-#define SIZE_ALWAYS_ERROR	-773
-
-void intercept_clear_setup()
-{
-	intercept_enabled = false;
-	intercept_filename = 0;
-	intercept_filedes = -1;
-	intercept_errorafter = 0;
-	intercept_syscall = 0;
-	intercept_filepos = 0;
-}
-
-bool intercept_triggered()
-{
-	return !intercept_enabled;
-}
-
-void intercept_setup_error(const char *filename, unsigned int errorafter, int errortoreturn, int syscalltoerror)
-{
-	TRACE4("Setup for error: %s, after %d, err %d, syscall %d\n", filename, errorafter, errortoreturn, syscalltoerror);
-	intercept_enabled = true;
-	intercept_filename = filename;
-	intercept_filedes = -1;
-	intercept_errorafter = errorafter;
-	intercept_syscall = syscalltoerror;
-	intercept_errno = errortoreturn;
-	intercept_filepos = 0;
-}
-
-bool intercept_errornow(int d, int size, int syscallnum)
-{
-	if(intercept_filedes != -1 && d == intercept_filedes && syscallnum == intercept_syscall)
-	{
-		//printf("Checking for err, %d, %d, %d\n", d, size, syscallnum);
-		if(size == SIZE_ALWAYS_ERROR)
-		{
-			// Looks good for an error!
-			TRACE2("Returning error %d for syscall %d\n", intercept_errno, syscallnum);
-			return true;
-		}
-		// where are we in the file?
-		if(intercept_filepos >= intercept_errorafter || intercept_filepos >= ((off_t)intercept_errorafter - size))
-		{
-			TRACE3("Returning error %d for syscall %d, file pos %d\n", intercept_errno, syscallnum, (int)intercept_filepos);
-			return true;
-		}
-	}
-	return false;	// no error please!
-}
-
-int intercept_reterr()
-{
-	intercept_enabled = false;
-	intercept_filename = 0;
-	intercept_filedes = -1;
-	intercept_errorafter = 0;
-	intercept_syscall = 0;
-	return intercept_errno;
-}
-
-#define CHECK_FOR_FAKE_ERROR_COND(D, S, CALL, FAILRES)	\
-	if(intercept_enabled)					\
-	{										\
-		if(intercept_errornow(D, S, CALL))	\
-		{									\
-			errno = intercept_reterr();		\
-			return FAILRES;					\
-		}									\
-	}
-
-extern "C" int
-open(const char *path, int flags, mode_t mode)
-{
-	if(intercept_enabled)
-	{
-		if(intercept_syscall == SYS_open && strcmp(path, intercept_filename) == 0)
-		{
-			errno = intercept_reterr();
-			return -1;
-		}
-	}
-#ifdef PLATFORM_NO_SYSCALL
-	int r = TEST_open(path, flags, mode);
-#else
-	int r = syscall(SYS_open, path, flags, mode);
-#endif
-	if(intercept_enabled && intercept_filedes == -1)
-	{
-		// Right file?
-		if(strcmp(intercept_filename, path) == 0)
-		{
-			intercept_filedes = r;
-			//printf("Found file to intercept, h = %d\n", r);
-		}
-	}
-	return r;
-}
-
-extern "C" int
-open64(const char *path, int flags, mode_t mode)
-{
-	// With _FILE_OFFSET_BITS set to 64 this should really use (flags |
-	// O_LARGEFILE) here, but not actually necessary for the tests and not
-	// worth the trouble finding O_LARGEFILE
-	return open(path, flags, mode);
-}
-
-extern "C" int
-close(int d)
-{
-	CHECK_FOR_FAKE_ERROR_COND(d, SIZE_ALWAYS_ERROR, SYS_close, -1);
-#ifdef PLATFORM_NO_SYSCALL
-	int r = TEST_close(d);
-#else
-	int r = syscall(SYS_close, d);
-#endif
-	if(r == 0)
-	{
-		if(d == intercept_filedes)
-		{
-			intercept_filedes = -1;
-		}
-	}
-	return r;
-}
-
-extern "C" ssize_t
-write(int d, const void *buf, size_t nbytes)
-{
-	CHECK_FOR_FAKE_ERROR_COND(d, nbytes, SYS_write, -1);
-#ifdef PLATFORM_NO_SYSCALL
-	int r = TEST_write(d, buf, nbytes);
-#else
-	int r = syscall(SYS_write, d, buf, nbytes);
-#endif
-	if(r != -1)
-	{
-		intercept_filepos += r;
-	}
-	return r;
-}
-
-extern "C" ssize_t
-read(int d, void *buf, size_t nbytes)
-{
-	CHECK_FOR_FAKE_ERROR_COND(d, nbytes, SYS_read, -1);
-#ifdef PLATFORM_NO_SYSCALL
-	int r = TEST_read(d, buf, nbytes);
-#else
-	int r = syscall(SYS_read, d, buf, nbytes);
-#endif
-	if(r != -1)
-	{
-		intercept_filepos += r;
-	}
-	return r;
-}
-
-extern "C" ssize_t
-readv(int d, const struct iovec *iov, int iovcnt)
-{
-	// how many bytes?
-	int nbytes = 0;
-	for(int b = 0; b < iovcnt; ++b)
-	{
-		nbytes += iov[b].iov_len;
-	}
-
-	CHECK_FOR_FAKE_ERROR_COND(d, nbytes, SYS_readv, -1);
-#ifdef PLATFORM_NO_SYSCALL
-	int r = TEST_readv(d, iov, iovcnt);
-#else
-	int r = syscall(SYS_readv, d, iov, iovcnt);
-#endif
-	if(r != -1)
-	{
-		intercept_filepos += r;
-	}
-	return r;
-}
-
-extern "C" off_t
-lseek(int fildes, off_t offset, int whence)
-{
-	// random magic for lseek syscall, see /usr/src/lib/libc/sys/lseek.c
-	CHECK_FOR_FAKE_ERROR_COND(fildes, 0, SYS_lseek, -1);
-#ifdef PLATFORM_NO_SYSCALL
-	int r = TEST_lseek(fildes, offset, whence);
-#else
-	#ifdef HAVE_LSEEK_DUMMY_PARAM
-		off_t r = syscall(SYS_lseek, fildes, 0 /* extra 0 required here! */, offset, whence);
-	#elif defined(_FILE_OFFSET_BITS)
-		// Don't bother trying to call SYS__llseek on 32 bit since it is
-		// fiddly and not needed for the tests
-		off_t r = syscall(SYS_lseek, fildes, (uint32_t)offset, whence);
-	#else
-		off_t r = syscall(SYS_lseek, fildes, offset, whence);
-	#endif
-#endif
-	if(r != -1)
-	{
-		intercept_filepos = r;
-	}
-	return r;
-}
-
-#endif // n PLATFORM_CLIB_FNS_INTERCEPTION_IMPOSSIBLE