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authorPeter Maydell <peter.maydell@linaro.org>2011-12-14 15:37:18 +0000
committerRiku Voipio <riku.voipio@linaro.org>2012-02-02 17:51:20 +0200
commit30297b55f797e5b74d1823b64c52b1bebd2a5d85 (patch)
tree1a9062fe82d1df2bcc8f54ba0445e73819646f96 /linux-user
parente3c33ec6b07dc4d0503cb43b2114be47fc344d36 (diff)
linux-user/syscall.c: Implement f and l versions of set/get/removexattr
Implement the f and l versions (operate on fd, don't follow links) of the setxattr, getxattr and removexattr syscalls. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'linux-user')
-rw-r--r--linux-user/syscall.c79
1 files changed, 70 insertions, 9 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 0a78a185b..762115bad 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -7796,18 +7796,13 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
#endif
#ifdef CONFIG_ATTR
#ifdef TARGET_NR_setxattr
- case TARGET_NR_lsetxattr:
- case TARGET_NR_fsetxattr:
- case TARGET_NR_lgetxattr:
- case TARGET_NR_fgetxattr:
case TARGET_NR_listxattr:
case TARGET_NR_llistxattr:
case TARGET_NR_flistxattr:
- case TARGET_NR_lremovexattr:
- case TARGET_NR_fremovexattr:
ret = -TARGET_EOPNOTSUPP;
break;
case TARGET_NR_setxattr:
+ case TARGET_NR_lsetxattr:
{
void *p, *n, *v = 0;
if (arg3) {
@@ -7820,7 +7815,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
p = lock_user_string(arg1);
n = lock_user_string(arg2);
if (p && n) {
- ret = get_errno(setxattr(p, n, v, arg4, arg5));
+ if (num == TARGET_NR_setxattr) {
+ ret = get_errno(setxattr(p, n, v, arg4, arg5));
+ } else {
+ ret = get_errno(lsetxattr(p, n, v, arg4, arg5));
+ }
} else {
ret = -TARGET_EFAULT;
}
@@ -7829,7 +7828,28 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
unlock_user(v, arg3, 0);
}
break;
+ case TARGET_NR_fsetxattr:
+ {
+ void *n, *v = 0;
+ if (arg3) {
+ v = lock_user(VERIFY_READ, arg3, arg4, 1);
+ if (!v) {
+ ret = -TARGET_EFAULT;
+ break;
+ }
+ }
+ n = lock_user_string(arg2);
+ if (n) {
+ ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5));
+ } else {
+ ret = -TARGET_EFAULT;
+ }
+ unlock_user(n, arg2, 0);
+ unlock_user(v, arg3, 0);
+ }
+ break;
case TARGET_NR_getxattr:
+ case TARGET_NR_lgetxattr:
{
void *p, *n, *v = 0;
if (arg3) {
@@ -7842,7 +7862,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
p = lock_user_string(arg1);
n = lock_user_string(arg2);
if (p && n) {
- ret = get_errno(getxattr(p, n, v, arg4));
+ if (num == TARGET_NR_getxattr) {
+ ret = get_errno(getxattr(p, n, v, arg4));
+ } else {
+ ret = get_errno(lgetxattr(p, n, v, arg4));
+ }
} else {
ret = -TARGET_EFAULT;
}
@@ -7851,13 +7875,38 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
unlock_user(v, arg3, arg4);
}
break;
+ case TARGET_NR_fgetxattr:
+ {
+ void *n, *v = 0;
+ if (arg3) {
+ v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
+ if (!v) {
+ ret = -TARGET_EFAULT;
+ break;
+ }
+ }
+ n = lock_user_string(arg2);
+ if (n) {
+ ret = get_errno(fgetxattr(arg1, n, v, arg4));
+ } else {
+ ret = -TARGET_EFAULT;
+ }
+ unlock_user(n, arg2, 0);
+ unlock_user(v, arg3, arg4);
+ }
+ break;
case TARGET_NR_removexattr:
+ case TARGET_NR_lremovexattr:
{
void *p, *n;
p = lock_user_string(arg1);
n = lock_user_string(arg2);
if (p && n) {
- ret = get_errno(removexattr(p, n));
+ if (num == TARGET_NR_removexattr) {
+ ret = get_errno(removexattr(p, n));
+ } else {
+ ret = get_errno(lremovexattr(p, n));
+ }
} else {
ret = -TARGET_EFAULT;
}
@@ -7865,6 +7914,18 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
unlock_user(n, arg2, 0);
}
break;
+ case TARGET_NR_fremovexattr:
+ {
+ void *n;
+ n = lock_user_string(arg2);
+ if (n) {
+ ret = get_errno(fremovexattr(arg1, n));
+ } else {
+ ret = -TARGET_EFAULT;
+ }
+ unlock_user(n, arg2, 0);
+ }
+ break;
#endif
#endif /* CONFIG_ATTR */
#ifdef TARGET_NR_set_thread_area