greatly improve freopen behavior

[musl] / src / stdio / fopen.c

diff --git a/src/stdio/fopen.c b/src/stdio/fopen.c
index 03c10cd..c741aed 100644 (file)
--- a/src/stdio/fopen.c
+++ b/src/stdio/fopen.c
@@ -13,14 +13,7 @@ FILE *fopen(const char *restrict filename, const char *restrict mode)
        }
 
        /* Compute the flags to pass to open() */
-       if (strchr(mode, '+')) flags = O_RDWR;
-       else if (*mode == 'r') flags = O_RDONLY;
-       else flags = O_WRONLY;
-       if (strchr(mode, 'x')) flags |= O_EXCL;
-       if (strchr(mode, 'e')) flags |= O_CLOEXEC;
-       if (*mode != 'r') flags |= O_CREAT;
-       if (*mode == 'w') flags |= O_TRUNC;
-       if (*mode == 'a') flags |= O_APPEND;
+       flags = __fmodeflags(mode);
 
        fd = syscall_cp(SYS_open, filename, flags|O_LARGEFILE, 0666);
        if (fd < 0) return 0;