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[PATCH 10/11] bsd-user: Implement trunctate and ftruncate
From: |
Warner Losh |
Subject: |
[PATCH 10/11] bsd-user: Implement trunctate and ftruncate |
Date: |
Sun, 12 Jun 2022 14:48:50 -0600 |
Signed-off-by: Stacey Son <sson@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 73263ba482f..ccfa65ec5e9 100644
--- a/bsd-user/bsd-file.h
+++ b/bsd-user/bsd-file.h
@@ -505,4 +505,34 @@ static abi_long do_bsd_dup2(abi_long arg1, abi_long arg2)
return get_errno(dup2(arg1, arg2));
}
+/* truncate(2) */
+static abi_long do_bsd_truncate(void *cpu_env, abi_long arg1,
+ abi_long arg2, abi_long arg3, abi_long arg4)
+{
+ abi_long ret;
+ void *p;
+
+ LOCK_PATH(p, arg1);
+ if (regpairs_aligned(cpu_env) != 0) {
+ arg2 = arg3;
+ arg3 = arg4;
+ }
+ ret = get_errno(truncate(p, target_arg64(arg2, arg3)));
+ UNLOCK_PATH(p, arg1);
+
+ return ret;
+}
+
+/* ftruncate(2) */
+static abi_long do_bsd_ftruncate(void *cpu_env, abi_long arg1,
+ abi_long arg2, abi_long arg3, abi_long arg4)
+{
+
+ if (regpairs_aligned(cpu_env) != 0) {
+ arg2 = arg3;
+ arg3 = arg4;
+ }
+ return get_errno(ftruncate(arg1, target_arg64(arg2, arg3)));
+}
+
#endif /* BSD_FILE_H */
diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c
index d9ebb9d50d6..3c8f6cad0e8 100644
--- a/bsd-user/freebsd/os-syscall.c
+++ b/bsd-user/freebsd/os-syscall.c
@@ -357,6 +357,14 @@ static abi_long freebsd_syscall(void *cpu_env, int num,
abi_long arg1,
ret = do_bsd_dup2(arg1, arg2);
break;
+ case TARGET_FREEBSD_NR_truncate: /* truncate(2) */
+ ret = do_bsd_truncate(cpu_env, arg1, arg2, arg3, arg4);
+ break;
+
+ case TARGET_FREEBSD_NR_ftruncate: /* ftruncate(2) */
+ ret = do_bsd_ftruncate(cpu_env, arg1, arg2, arg3, arg4);
+ break;
+
default:
qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
ret = -TARGET_ENOSYS;
--
2.33.1
- [PATCH 08/11] bsd-user: Implement rmdir and undocumented -_getcwd, (continued)