bsd-user: Implement pathconf, lpathconf and fpathconf

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

2 files changed, 44 insertions, 0 deletions

diff --git a/bsd-user/bsd-file.h b/bsd-user/bsd-file.h
index 4b2f6dcc1d..065f576dfe 100644
--- a/bsd-user/bsd-file.h
+++ b/bsd-user/bsd-file.h
@@ -894,4 +894,36 @@ static abi_long do_bsd_mkfifoat(abi_long arg1, abi_long arg2,
     return ret;
 }
 
+/* pathconf(2) */
+static abi_long do_bsd_pathconf(abi_long arg1, abi_long arg2)
+{
+    abi_long ret;
+    void *p;
+
+    LOCK_PATH(p, arg1);
+    ret = get_errno(pathconf(p, arg2)); /* XXX path(p)? */
+    UNLOCK_PATH(p, arg1);
+
+    return ret;
+}
+
+/* lpathconf(2) */
+static abi_long do_bsd_lpathconf(abi_long arg1, abi_long arg2)
+{
+    abi_long ret;
+    void *p;
+
+    LOCK_PATH(p, arg1);
+    ret = get_errno(lpathconf(p, arg2)); /* XXX path(p)? */
+    UNLOCK_PATH(p, arg1);
+
+    return ret;
+}
+
+/* fpathconf(2) */
+static abi_long do_bsd_fpathconf(abi_long arg1, abi_long arg2)
+{
+    return get_errno(fpathconf(arg1, arg2));
+}
+
 #endif /* BSD_FILE_H */
diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c
index be225195fb..7de4c40bb1 100644
--- a/bsd-user/freebsd/os-syscall.c
+++ b/bsd-user/freebsd/os-syscall.c
@@ -475,6 +475,18 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1,
         ret = do_bsd_mkfifoat(arg1, arg2, arg3);
         break;
 
+    case TARGET_FREEBSD_NR_pathconf: /* pathconf(2) */
+        ret = do_bsd_pathconf(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_lpathconf: /* lpathconf(2) */
+        ret = do_bsd_lpathconf(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_fpathconf: /* fpathconf(2) */
+        ret = do_bsd_fpathconf(arg1, arg2);
+        break;
+
     default:
         qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
         ret = -TARGET_ENOSYS;