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add pread64 and pwrite64 system calls 

(Gary Thomas)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4126 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-03-28 22:32:06 +00:00
parent ce3f0e2f11
commit f2c7ba159b
1 changed files with 14 additions and 0 deletions
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14
linux-user/syscall.c
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@ -4874,6 +4874,20 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
ret = get_errno(pwrite(arg1, p, arg3, arg4)); ret = get_errno(pwrite(arg1, p, arg3, arg4));
unlock_user(p, arg2, 0); unlock_user(p, arg2, 0);
break; break;
#endif
#ifdef TARGET_NR_pread64
case TARGET_NR_pread64:
if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
goto efault;
ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5)));
unlock_user(p, arg2, ret);
break;
case TARGET_NR_pwrite64:
if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
goto efault;
ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5)));
unlock_user(p, arg2, 0);
break;
#endif #endif
case TARGET_NR_getcwd: case TARGET_NR_getcwd:
if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0))) if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0)))