-O ro: readonly files, never write anything (except to standard streams)

[tfcrypt.git] / tfc_misc.c

diff --git a/tfc_misc.c b/tfc_misc.c
index 44e1117be6342ec710d8e6848824cd55b9d6f895..bfb7265ff2dbf00442f26702456e7caeaf2ea864 100644 (file)
--- a/tfc_misc.c
+++ b/tfc_misc.c
@@ -63,6 +63,26 @@ tfc_yesno str_empty(const char *str)
        return NO;
 }
 
+int xxopen(tfc_yesno noerr, const char *pathname, int flags)
+{
+       int r;
+
+       if ((flags & O_WRONLY || flags & O_RDWR)) {
+               if (read_only == YES) flags = O_RDONLY;
+               else flags |= write_flags;
+       }
+
+       flags |= O_LARGEFILE;
+       r = open(pathname, flags, 0666);
+       if (noerr == NO && r == -1) xerror(NO, NO, YES, "%s", pathname);
+       return r;
+}
+
+int xopen(const char *pathname, int flags)
+{
+       return xxopen(NO, pathname, flags);
+}
+
 void xclose(int fd)
 {
        if (fd < 3) return;
@@ -164,7 +184,7 @@ tfc_fsize tfc_fnamesize(char *fname, tfc_yesno noexit)
                memset(s, 0, 2);
        }
 
-       fnmfd = open(fname, O_RDONLY);
+       fnmfd = xxopen(YES, fname, O_RDONLY);
        if (s) memcpy(s, T, 2);
        if (fnmfd == -1) {
                xerror(noexit, NO, YES, "%s", fname);