[rt-smart] Fix return value in syscall (#7045)

* [timer] fix sys return value to avoid outdated errno

* [rtdef] add wrap to stringify

* [syscall] return value in rt errno should be recycle immediately after call to posix layer

* [syscall] return type of syscall should be long
errno should be recycle immediately after call to rt posix layer to avoid
outdated value

* [format] move prototype to header file

* [fix] futex definition conflict

1 files changed, 2 insertions, 2 deletions

diff --git a/components/dfs/src/dfs.c b/components/dfs/src/dfs.c
index 5ec2c7bab9..e2928f5e1b 100644
--- a/components/dfs/src/dfs.c
+++ b/components/dfs/src/dfs.c
@@ -374,7 +374,7 @@ void fd_release(int fd)
     fdt_fd_release(fdt, fd);
 }
 
-int sys_dup(int oldfd)
+rt_err_t sys_dup(int oldfd)
 {
     int newfd = -1;
     struct dfs_fdtable *fdt = NULL;
@@ -466,7 +466,7 @@ int fd_is_open(const char *pathname)
     return -1;
 }
 
-int sys_dup2(int oldfd, int newfd)
+rt_err_t sys_dup2(int oldfd, int newfd)
 {
     struct dfs_fdtable *fdt = NULL;
     int ret = 0;