[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH 08/11] bsd-user: Implement rmdir and undocumented -_getcwd
From: |
Warner Losh |
Subject: |
[PATCH 08/11] bsd-user: Implement rmdir and undocumented -_getcwd |
Date: |
Sun, 12 Jun 2022 14:48:48 -0600 |
Implemenet rmdir and __getcwd. Declare __getcwd as extern because
there's no installed FreeBSD header that has it. It's used internally by
libc, which doesn't provide an external declaration, but does export the
symbol.
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Jung-uk Kim <jkim@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
---
bsd-user/bsd-file.h | 30 ++++++++++++++++++++++++++++++
bsd-user/freebsd/os-syscall.c | 8 ++++++++
2 files changed, 38 insertions(+)
diff --git a/bsd-user/bsd-file.h b/bsd-user/bsd-file.h
index 35036364ad8..500d6ba78b9 100644
--- a/bsd-user/bsd-file.h
+++ b/bsd-user/bsd-file.h
@@ -55,6 +55,7 @@ extern struct iovec *lock_iovec(int type, abi_ulong
target_addr, int count,
int copy);
extern void unlock_iovec(struct iovec *vec, abi_ulong target_addr, int count,
int copy);
+extern int __getcwd(char *path, size_t len);
int safe_open(const char *path, int flags, mode_t mode);
int safe_openat(int fd, const char *path, int flags, mode_t mode);
@@ -461,4 +462,33 @@ static abi_long do_bsd_mkdirat(abi_long arg1, abi_long
arg2,
return ret;
}
+/* rmdir(2) */
+static abi_long do_bsd_rmdir(abi_long arg1)
+{
+ abi_long ret;
+ void *p;
+
+ LOCK_PATH(p, arg1);
+ ret = get_errno(rmdir(p)); /* XXX path(p)? */
+ UNLOCK_PATH(p, arg1);
+
+ return ret;
+}
+
+/* undocumented __getcwd(char *buf, size_t len) system call */
+static abi_long do_bsd___getcwd(abi_long arg1, abi_long arg2)
+{
+ abi_long ret;
+ void *p;
+
+ p = lock_user(VERIFY_WRITE, arg1, arg2, 0);
+ if (p == NULL) {
+ return -TARGET_EFAULT;
+ }
+ ret = __getcwd(p, arg2);
+ unlock_user(p, arg1, ret == 0 ? strlen(p) + 1 : 0);
+
+ return get_errno(ret);
+}
+
#endif /* BSD_FILE_H */
diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c
index 9381ddb5be1..e28a566d6c3 100644
--- a/bsd-user/freebsd/os-syscall.c
+++ b/bsd-user/freebsd/os-syscall.c
@@ -341,6 +341,14 @@ static abi_long freebsd_syscall(void *cpu_env, int num,
abi_long arg1,
ret = do_bsd_mkdirat(arg1, arg2, arg3);
break;
+ case TARGET_FREEBSD_NR_rmdir: /* rmdir(2) (XXX no rmdirat()?) */
+ ret = do_bsd_rmdir(arg1);
+ break;
+
+ case TARGET_FREEBSD_NR___getcwd: /* undocumented __getcwd() */
+ ret = do_bsd___getcwd(arg1, arg2);
+ break;
+
default:
qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
ret = -TARGET_ENOSYS;
--
2.33.1
- Re: [PATCH 01/11] bsd-user: Implement open, openat and close, (continued)
- [PATCH 03/11] bsd-user: Implement revoke, access, eaccess and faccessat, Warner Losh, 2022/06/12
- [PATCH 04/11] bsd-user: Implement chdir and fchdir, Warner Losh, 2022/06/12
- [PATCH 05/11] bsd-user: Implement rename and renameat, Warner Losh, 2022/06/12
- [PATCH 06/11] bsd-user: Implement link, linkat, unlink and unlinkat, Warner Losh, 2022/06/12
- [PATCH 08/11] bsd-user: Implement rmdir and undocumented -_getcwd,
Warner Losh <=
- [PATCH 09/11] bsd-user: Implement dup and dup2, Warner Losh, 2022/06/12
- [PATCH 11/11] bsd-user: Implement acct and sync, Warner Losh, 2022/06/12
- [PATCH 07/11] bsd-user: Implement mkdir and mkdirat, Warner Losh, 2022/06/12
- [PATCH 10/11] bsd-user: Implement trunctate and ftruncate, Warner Losh, 2022/06/12