X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=arch%2Fum%2Fos-Linux%2Fmem.c;h=f1ea169db85e174cf2d6998043bce9d655eef0cd;hb=7baca6ad0ef09c8a78d798c93a3ce25336e8f50f;hp=b170b4704dc40aa25137f6ab29ece4b36eb03078;hpb=cdb8355add9b1d87ecfcb58b12879897dc1e3e36;p=powerpc.git

diff --git a/arch/um/os-Linux/mem.c b/arch/um/os-Linux/mem.c
index b170b4704d..f1ea169db8 100644
--- a/arch/um/os-Linux/mem.c
+++ b/arch/um/os-Linux/mem.c
@@ -20,7 +20,13 @@
 
 #include <sys/param.h>
 
+/* Modified by which_tmpdir, which is called during early boot */
 static char *default_tmpdir = "/tmp";
+
+/*
+ *  Modified when creating the physical memory file and when checking
+ * the tmp filesystem for usability, both happening during early boot.
+ */
 static char *tempdir = NULL;
 
 static void __init find_tempdir(void)
@@ -29,7 +35,8 @@ static void __init find_tempdir(void)
 	int i;
 	char *dir = NULL;
 
-	if(tempdir != NULL) return;	/* We've already been called */
+	if(tempdir != NULL) /* We've already been called */
+		return;
 	for(i = 0; dirs[i]; i++){
 		dir = getenv(dirs[i]);
 		if((dir != NULL) && (*dir != '\0'))
@@ -83,6 +90,7 @@ static int next(int fd, char *buf, int size, char c)
 	return 1;
 }
 
+/* which_tmpdir is called only during early boot */
 static int checked_tmpdir = 0;
 
 /* Look for a tmpfs mounted at /dev/shm.  I couldn't find a cleaner
@@ -132,6 +140,9 @@ err:
 	else if(found < 0)
 		printf("read returned errno %d\n", -found);
 
+out:
+	close(fd);
+
 	return;
 
 found:
@@ -141,11 +152,12 @@ found:
 
 	if(strncmp(buf, "tmpfs", strlen("tmpfs"))){
 		printf("not tmpfs\n");
-		return;
+		goto out;
 	}
 
 	printf("OK\n");
 	default_tmpdir = "/dev/shm";
+	goto out;
 }
 
 /*
@@ -182,7 +194,7 @@ int make_tempfile(const char *template, char **out_tempname, int do_unlink)
 	} else {
 		free(tempname);
 	}
-	return(fd);
+	return fd;
 out:
 	free(tempname);
 	return -1;
@@ -227,7 +239,7 @@ int create_tmp_file(unsigned long long len)
 		exit(1);
 	}
 
-	return(fd);
+	return fd;
 }
 
 int create_mem_file(unsigned long long len)
@@ -241,7 +253,7 @@ int create_mem_file(unsigned long long len)
 		errno = -err;
 		perror("exec_close");
 	}
-	return(fd);
+	return fd;
 }