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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 2008-09-20 02:23:36 +00:00
parent a2155fcc65
commit 6a24a778ba
1 changed files with 83 additions and 58 deletions
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141
linux-user/syscall.c
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@ -156,6 +156,7 @@ static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
#define __NR_sys_faccessat __NR_faccessat
#define __NR_sys_fchmodat __NR_fchmodat
#define __NR_sys_fchownat __NR_fchownat
#define __NR_sys_fstatat64 __NR_fstatat64
#define __NR_sys_getcwd1 __NR_getcwd
#define __NR_sys_getdents __NR_getdents
#define __NR_sys_getdents64 __NR_getdents64
@ -200,6 +201,10 @@ _syscall4(int,sys_fchmodat,int,dirfd,const char *,pathname,
_syscall5(int,sys_fchownat,int,dirfd,const char *,pathname,
uid_t,owner,gid_t,group,int,flags)
#endif
#if defined(TARGET_NR_fstatat64) && defined(__NR_fstatat64)
_syscall4(int,sys_fstatat64,int,dirfd,const char *,pathname,
struct stat *,buf,int,flags)
#endif
_syscall2(int,sys_getcwd1,char *,buf,size_t,size)
#if TARGET_ABI_BITS == 32
_syscall3(int, sys_getdents, uint, fd, struct dirent *, dirp, uint, count);
@ -3149,6 +3154,67 @@ static inline abi_long host_to_target_timespec(abi_ulong target_addr,
return 0;
}
#ifdef TARGET_NR_stat64
static inline abi_long host_to_target_stat64(void *cpu_env,
abi_ulong target_addr,
struct stat *host_st)
{
#ifdef TARGET_ARM
if (((CPUARMState *)cpu_env)->eabi) {
struct target_eabi_stat64 *target_st;
if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
return -TARGET_EFAULT;
memset(target_st, 0, sizeof(struct target_eabi_stat64));
__put_user(host_st->st_dev, &target_st->st_dev);
__put_user(host_st->st_ino, &target_st->st_ino);
#ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
__put_user(host_st->st_ino, &target_st->__st_ino);
#endif
__put_user(host_st->st_mode, &target_st->st_mode);
__put_user(host_st->st_nlink, &target_st->st_nlink);
__put_user(host_st->st_uid, &target_st->st_uid);
__put_user(host_st->st_gid, &target_st->st_gid);
__put_user(host_st->st_rdev, &target_st->st_rdev);
__put_user(host_st->st_size, &target_st->st_size);
__put_user(host_st->st_blksize, &target_st->st_blksize);
__put_user(host_st->st_blocks, &target_st->st_blocks);
__put_user(host_st->st_atime, &target_st->target_st_atime);
__put_user(host_st->st_mtime, &target_st->target_st_mtime);
__put_user(host_st->st_ctime, &target_st->target_st_ctime);
unlock_user_struct(target_st, target_addr, 1);
} else
#endif
{
struct target_stat64 *target_st;
if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
return -TARGET_EFAULT;
memset(target_st, 0, sizeof(struct target_stat64));
__put_user(host_st->st_dev, &target_st->st_dev);
__put_user(host_st->st_ino, &target_st->st_ino);
#ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
__put_user(host_st->st_ino, &target_st->__st_ino);
#endif
__put_user(host_st->st_mode, &target_st->st_mode);
__put_user(host_st->st_nlink, &target_st->st_nlink);
__put_user(host_st->st_uid, &target_st->st_uid);
__put_user(host_st->st_gid, &target_st->st_gid);
__put_user(host_st->st_rdev, &target_st->st_rdev);
/* XXX: better use of kernel struct */
__put_user(host_st->st_size, &target_st->st_size);
__put_user(host_st->st_blksize, &target_st->st_blksize);
__put_user(host_st->st_blocks, &target_st->st_blocks);
__put_user(host_st->st_atime, &target_st->target_st_atime);
__put_user(host_st->st_mtime, &target_st->target_st_mtime);
__put_user(host_st->st_ctime, &target_st->target_st_ctime);
unlock_user_struct(target_st, target_addr, 1);
}
return 0;
}
#endif
#if defined(USE_NPTL)
/* ??? Using host futex calls even when target atomic operations
are not really atomic probably breaks things. However implementing
@ -5142,7 +5208,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
goto efault;
ret = get_errno(stat(path(p), &st));
unlock_user(p, arg1, 0);
goto do_stat64;
if (!is_error(ret))
ret = host_to_target_stat64(cpu_env, arg2, &st);
break;
#endif
#ifdef TARGET_NR_lstat64
case TARGET_NR_lstat64:
@ -5150,67 +5218,24 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
goto efault;
ret = get_errno(lstat(path(p), &st));
unlock_user(p, arg1, 0);
goto do_stat64;
if (!is_error(ret))
ret = host_to_target_stat64(cpu_env, arg2, &st);
break;
#endif
#ifdef TARGET_NR_fstat64
case TARGET_NR_fstat64:
{
ret = get_errno(fstat(arg1, &st));
do_stat64:
if (!is_error(ret)) {
#ifdef TARGET_ARM
if (((CPUARMState *)cpu_env)->eabi) {
struct target_eabi_stat64 *target_st;
if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0))
goto efault;
memset(target_st, 0, sizeof(struct target_eabi_stat64));
__put_user(st.st_dev, &target_st->st_dev);
__put_user(st.st_ino, &target_st->st_ino);
#ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
__put_user(st.st_ino, &target_st->__st_ino);
ret = get_errno(fstat(arg1, &st));
if (!is_error(ret))
ret = host_to_target_stat64(cpu_env, arg2, &st);
break;
#endif
__put_user(st.st_mode, &target_st->st_mode);
__put_user(st.st_nlink, &target_st->st_nlink);
__put_user(st.st_uid, &target_st->st_uid);
__put_user(st.st_gid, &target_st->st_gid);
__put_user(st.st_rdev, &target_st->st_rdev);
__put_user(st.st_size, &target_st->st_size);
__put_user(st.st_blksize, &target_st->st_blksize);
__put_user(st.st_blocks, &target_st->st_blocks);
__put_user(st.st_atime, &target_st->target_st_atime);
__put_user(st.st_mtime, &target_st->target_st_mtime);
__put_user(st.st_ctime, &target_st->target_st_ctime);
unlock_user_struct(target_st, arg2, 1);
} else
#endif
{
struct target_stat64 *target_st;
if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0))
goto efault;
memset(target_st, 0, sizeof(struct target_stat64));
__put_user(st.st_dev, &target_st->st_dev);
__put_user(st.st_ino, &target_st->st_ino);
#ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
__put_user(st.st_ino, &target_st->__st_ino);
#endif
__put_user(st.st_mode, &target_st->st_mode);
__put_user(st.st_nlink, &target_st->st_nlink);
__put_user(st.st_uid, &target_st->st_uid);
__put_user(st.st_gid, &target_st->st_gid);
__put_user(st.st_rdev, &target_st->st_rdev);
/* XXX: better use of kernel struct */
__put_user(st.st_size, &target_st->st_size);
__put_user(st.st_blksize, &target_st->st_blksize);
__put_user(st.st_blocks, &target_st->st_blocks);
__put_user(st.st_atime, &target_st->target_st_atime);
__put_user(st.st_mtime, &target_st->target_st_mtime);
__put_user(st.st_ctime, &target_st->target_st_ctime);
unlock_user_struct(target_st, arg2, 1);
}
}
}
#if defined(TARGET_NR_fstatat64) && defined(__NR_fstatat64)
case TARGET_NR_fstatat64:
if (!(p = lock_user_string(arg2)))
goto efault;
ret = get_errno(sys_fstatat64(arg1, path(p), &st, arg4));
if (!is_error(ret))
ret = host_to_target_stat64(cpu_env, arg3, &st);
break;
#endif
#ifdef USE_UID16