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Implement fstatat64() syscall (by Kirill Shutemov).
Move the transformation of struct stat64 into a separate function and implement fstatat64() using it. Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5268 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
balrog
parent
a2155fcc65
commit
6a24a778ba
@ -156,6 +156,7 @@ static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
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#define __NR_sys_faccessat __NR_faccessat
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#define __NR_sys_fchmodat __NR_fchmodat
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#define __NR_sys_fchownat __NR_fchownat
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#define __NR_sys_fstatat64 __NR_fstatat64
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#define __NR_sys_getcwd1 __NR_getcwd
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#define __NR_sys_getdents __NR_getdents
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#define __NR_sys_getdents64 __NR_getdents64
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@ -200,6 +201,10 @@ _syscall4(int,sys_fchmodat,int,dirfd,const char *,pathname,
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_syscall5(int,sys_fchownat,int,dirfd,const char *,pathname,
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uid_t,owner,gid_t,group,int,flags)
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#endif
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#if defined(TARGET_NR_fstatat64) && defined(__NR_fstatat64)
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_syscall4(int,sys_fstatat64,int,dirfd,const char *,pathname,
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struct stat *,buf,int,flags)
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#endif
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_syscall2(int,sys_getcwd1,char *,buf,size_t,size)
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#if TARGET_ABI_BITS == 32
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_syscall3(int, sys_getdents, uint, fd, struct dirent *, dirp, uint, count);
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@ -3149,6 +3154,67 @@ static inline abi_long host_to_target_timespec(abi_ulong target_addr,
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return 0;
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}
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#ifdef TARGET_NR_stat64
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static inline abi_long host_to_target_stat64(void *cpu_env,
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abi_ulong target_addr,
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struct stat *host_st)
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{
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#ifdef TARGET_ARM
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if (((CPUARMState *)cpu_env)->eabi) {
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struct target_eabi_stat64 *target_st;
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if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
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return -TARGET_EFAULT;
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memset(target_st, 0, sizeof(struct target_eabi_stat64));
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__put_user(host_st->st_dev, &target_st->st_dev);
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__put_user(host_st->st_ino, &target_st->st_ino);
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#ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
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__put_user(host_st->st_ino, &target_st->__st_ino);
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#endif
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__put_user(host_st->st_mode, &target_st->st_mode);
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__put_user(host_st->st_nlink, &target_st->st_nlink);
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__put_user(host_st->st_uid, &target_st->st_uid);
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__put_user(host_st->st_gid, &target_st->st_gid);
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__put_user(host_st->st_rdev, &target_st->st_rdev);
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__put_user(host_st->st_size, &target_st->st_size);
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__put_user(host_st->st_blksize, &target_st->st_blksize);
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__put_user(host_st->st_blocks, &target_st->st_blocks);
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__put_user(host_st->st_atime, &target_st->target_st_atime);
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__put_user(host_st->st_mtime, &target_st->target_st_mtime);
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__put_user(host_st->st_ctime, &target_st->target_st_ctime);
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unlock_user_struct(target_st, target_addr, 1);
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} else
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#endif
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{
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struct target_stat64 *target_st;
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if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
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return -TARGET_EFAULT;
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memset(target_st, 0, sizeof(struct target_stat64));
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__put_user(host_st->st_dev, &target_st->st_dev);
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__put_user(host_st->st_ino, &target_st->st_ino);
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#ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
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__put_user(host_st->st_ino, &target_st->__st_ino);
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#endif
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__put_user(host_st->st_mode, &target_st->st_mode);
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__put_user(host_st->st_nlink, &target_st->st_nlink);
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__put_user(host_st->st_uid, &target_st->st_uid);
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__put_user(host_st->st_gid, &target_st->st_gid);
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__put_user(host_st->st_rdev, &target_st->st_rdev);
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/* XXX: better use of kernel struct */
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__put_user(host_st->st_size, &target_st->st_size);
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__put_user(host_st->st_blksize, &target_st->st_blksize);
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__put_user(host_st->st_blocks, &target_st->st_blocks);
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__put_user(host_st->st_atime, &target_st->target_st_atime);
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__put_user(host_st->st_mtime, &target_st->target_st_mtime);
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__put_user(host_st->st_ctime, &target_st->target_st_ctime);
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unlock_user_struct(target_st, target_addr, 1);
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}
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return 0;
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}
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#endif
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#if defined(USE_NPTL)
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/* ??? Using host futex calls even when target atomic operations
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are not really atomic probably breaks things. However implementing
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@ -5142,7 +5208,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
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goto efault;
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ret = get_errno(stat(path(p), &st));
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unlock_user(p, arg1, 0);
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goto do_stat64;
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if (!is_error(ret))
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ret = host_to_target_stat64(cpu_env, arg2, &st);
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break;
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#endif
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#ifdef TARGET_NR_lstat64
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case TARGET_NR_lstat64:
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@ -5150,67 +5218,24 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
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goto efault;
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ret = get_errno(lstat(path(p), &st));
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unlock_user(p, arg1, 0);
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goto do_stat64;
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if (!is_error(ret))
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ret = host_to_target_stat64(cpu_env, arg2, &st);
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break;
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#endif
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#ifdef TARGET_NR_fstat64
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case TARGET_NR_fstat64:
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{
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ret = get_errno(fstat(arg1, &st));
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do_stat64:
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if (!is_error(ret)) {
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#ifdef TARGET_ARM
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if (((CPUARMState *)cpu_env)->eabi) {
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struct target_eabi_stat64 *target_st;
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if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0))
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goto efault;
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memset(target_st, 0, sizeof(struct target_eabi_stat64));
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__put_user(st.st_dev, &target_st->st_dev);
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__put_user(st.st_ino, &target_st->st_ino);
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#ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
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__put_user(st.st_ino, &target_st->__st_ino);
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ret = get_errno(fstat(arg1, &st));
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if (!is_error(ret))
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ret = host_to_target_stat64(cpu_env, arg2, &st);
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break;
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#endif
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__put_user(st.st_mode, &target_st->st_mode);
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__put_user(st.st_nlink, &target_st->st_nlink);
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__put_user(st.st_uid, &target_st->st_uid);
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__put_user(st.st_gid, &target_st->st_gid);
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__put_user(st.st_rdev, &target_st->st_rdev);
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__put_user(st.st_size, &target_st->st_size);
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__put_user(st.st_blksize, &target_st->st_blksize);
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__put_user(st.st_blocks, &target_st->st_blocks);
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__put_user(st.st_atime, &target_st->target_st_atime);
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__put_user(st.st_mtime, &target_st->target_st_mtime);
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__put_user(st.st_ctime, &target_st->target_st_ctime);
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unlock_user_struct(target_st, arg2, 1);
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} else
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#endif
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{
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struct target_stat64 *target_st;
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if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0))
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goto efault;
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memset(target_st, 0, sizeof(struct target_stat64));
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__put_user(st.st_dev, &target_st->st_dev);
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__put_user(st.st_ino, &target_st->st_ino);
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#ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
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__put_user(st.st_ino, &target_st->__st_ino);
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#endif
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__put_user(st.st_mode, &target_st->st_mode);
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__put_user(st.st_nlink, &target_st->st_nlink);
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__put_user(st.st_uid, &target_st->st_uid);
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__put_user(st.st_gid, &target_st->st_gid);
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__put_user(st.st_rdev, &target_st->st_rdev);
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/* XXX: better use of kernel struct */
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__put_user(st.st_size, &target_st->st_size);
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__put_user(st.st_blksize, &target_st->st_blksize);
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__put_user(st.st_blocks, &target_st->st_blocks);
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__put_user(st.st_atime, &target_st->target_st_atime);
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__put_user(st.st_mtime, &target_st->target_st_mtime);
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__put_user(st.st_ctime, &target_st->target_st_ctime);
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unlock_user_struct(target_st, arg2, 1);
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}
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}
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}
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#if defined(TARGET_NR_fstatat64) && defined(__NR_fstatat64)
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case TARGET_NR_fstatat64:
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if (!(p = lock_user_string(arg2)))
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goto efault;
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ret = get_errno(sys_fstatat64(arg1, path(p), &st, arg4));
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if (!is_error(ret))
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ret = host_to_target_stat64(cpu_env, arg3, &st);
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break;
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#endif
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#ifdef USE_UID16
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