lib: pttype: fix DOS detection

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/lib/pttype.c b/lib/pttype.c
index 23070b9ad36bfbd936fa78671ae7959bb77dfd03..7e1657de85bd175224a2d725ec8bbccccad85319 100644 (file)
--- a/lib/pttype.c
+++ b/lib/pttype.c
@@ -104,7 +104,7 @@ twos_complement_32bit_sum(u_int32_t *base, int size)
 }
 
 static int
-sgi_parttable(char *base)
+sgi_parttable(unsigned char *base)
 {
        u_int32_t csum;
        struct sgi_volume_header *vh = (struct sgi_volume_header *) base;
@@ -120,7 +120,7 @@ sgi_parttable(char *base)
  * DOS
  */
 static int
-dos_parttable(char *base)
+dos_parttable(unsigned char *base)
 {
        return (base[510] == 0x55 && base[511] == 0xaa);
 }
@@ -138,7 +138,7 @@ typedef struct {
 #define aixlabel(x) ((aix_partition *)x)
 
 static int
-aix_parttable(char *base)
+aix_parttable(unsigned char *base)
 {
        return (aixlabel(base)->magic == AIX_LABEL_MAGIC ||
                aixlabel(base)->magic == AIX_LABEL_MAGIC_SWAPPED);
@@ -180,7 +180,7 @@ typedef struct {
 #define sunlabel(x) ((sun_partition *)x)
 
 static int
-sun_parttable(char *base)
+sun_parttable(unsigned char *base)
 {
        unsigned short *ush;
        int csum = 0;
@@ -208,7 +208,7 @@ typedef struct {
 #define maclabel(x) ((mac_partition *)x)
 
 static int
-mac_parttable(char *base)
+mac_parttable(unsigned char *base)
 {
        return (ntohs(maclabel(base)->magic) == MAC_LABEL_MAGIC ||
                ntohs(maclabel(base)->magic) == MAC_PARTITION_MAGIC ||
@@ -226,7 +226,7 @@ struct bsd_disklabel {
 };
 
 static int
-bsd_parttable(char *base)
+bsd_parttable(unsigned char *base)
 {
        struct bsd_disklabel *l = (struct bsd_disklabel *)
                                        (base + (DEFAULT_SECTOR_SIZE * 1));
@@ -239,7 +239,7 @@ get_pt_type(const char *device)
 {
        int     fd;
        char    *type = NULL;
-       char    buf[PTTYPE_BUFSIZ];
+       unsigned char   buf[PTTYPE_BUFSIZ];
 
        if ((fd = open(device, O_RDONLY)) < 0)
                ;