diff options
| -rw-r--r-- | arch/um/drivers/cow.h | 35 | ||||
| -rw-r--r-- | arch/um/drivers/cow_user.c | 43 |
2 files changed, 21 insertions, 57 deletions
diff --git a/arch/um/drivers/cow.h b/arch/um/drivers/cow.h index dc36b222100b..6673508f3426 100644 --- a/arch/um/drivers/cow.h +++ b/arch/um/drivers/cow.h @@ -3,41 +3,6 @@ #include <asm/types.h> -#if defined(__KERNEL__) - -# include <asm/byteorder.h> - -# if defined(__BIG_ENDIAN) -# define ntohll(x) (x) -# define htonll(x) (x) -# elif defined(__LITTLE_ENDIAN) -# define ntohll(x) be64_to_cpu(x) -# define htonll(x) cpu_to_be64(x) -# else -# error "Could not determine byte order" -# endif - -#else -/* For the definition of ntohl, htonl and __BYTE_ORDER */ -#include <endian.h> -#include <netinet/in.h> -#if defined(__BYTE_ORDER) - -# if __BYTE_ORDER == __BIG_ENDIAN -# define ntohll(x) (x) -# define htonll(x) (x) -# elif __BYTE_ORDER == __LITTLE_ENDIAN -# define ntohll(x) bswap_64(x) -# define htonll(x) bswap_64(x) -# else -# error "Could not determine byte order: __BYTE_ORDER uncorrectly defined" -# endif - -#else /* ! defined(__BYTE_ORDER) */ -# error "Could not determine byte order: __BYTE_ORDER not defined" -#endif -#endif /* ! defined(__KERNEL__) */ - extern int init_cow_file(int fd, char *cow_file, char *backing_file, int sectorsize, int alignment, int *bitmap_offset_out, unsigned long *bitmap_len_out, int *data_offset_out); diff --git a/arch/um/drivers/cow_user.c b/arch/um/drivers/cow_user.c index 9cbb426c0b91..0ee9cc6cc4c7 100644 --- a/arch/um/drivers/cow_user.c +++ b/arch/um/drivers/cow_user.c @@ -8,11 +8,10 @@ * that. */ #include <unistd.h> -#include <byteswap.h> #include <errno.h> #include <string.h> #include <arpa/inet.h> -#include <asm/types.h> +#include <endian.h> #include "cow.h" #include "cow_sys.h" @@ -214,8 +213,8 @@ int write_cow_header(char *cow_file, int fd, char *backing_file, "header\n"); goto out; } - header->magic = htonl(COW_MAGIC); - header->version = htonl(COW_VERSION); + header->magic = htobe32(COW_MAGIC); + header->version = htobe32(COW_VERSION); err = -EINVAL; if (strlen(backing_file) > sizeof(header->backing_file) - 1) { @@ -246,10 +245,10 @@ int write_cow_header(char *cow_file, int fd, char *backing_file, goto out_free; } - header->mtime = htonl(modtime); - header->size = htonll(*size); - header->sectorsize = htonl(sectorsize); - header->alignment = htonl(alignment); + header->mtime = htobe32(modtime); + header->size = htobe64(*size); + header->sectorsize = htobe32(sectorsize); + header->alignment = htobe32(alignment); header->cow_format = COW_BITMAP; err = cow_write_file(fd, header, sizeof(*header)); @@ -301,8 +300,8 @@ int read_cow_header(int (*reader)(__u64, char *, int, void *), void *arg, magic = header->v1.magic; if (magic == COW_MAGIC) version = header->v1.version; - else if (magic == ntohl(COW_MAGIC)) - version = ntohl(header->v1.version); + else if (magic == be32toh(COW_MAGIC)) + version = be32toh(header->v1.version); /* No error printed because the non-COW case comes through here */ else goto out; @@ -327,9 +326,9 @@ int read_cow_header(int (*reader)(__u64, char *, int, void *), void *arg, "header\n"); goto out; } - *mtime_out = ntohl(header->v2.mtime); - *size_out = ntohll(header->v2.size); - *sectorsize_out = ntohl(header->v2.sectorsize); + *mtime_out = be32toh(header->v2.mtime); + *size_out = be64toh(header->v2.size); + *sectorsize_out = be32toh(header->v2.sectorsize); *bitmap_offset_out = sizeof(header->v2); *align_out = *sectorsize_out; file = header->v2.backing_file; @@ -341,10 +340,10 @@ int read_cow_header(int (*reader)(__u64, char *, int, void *), void *arg, "header\n"); goto out; } - *mtime_out = ntohl(header->v3.mtime); - *size_out = ntohll(header->v3.size); - *sectorsize_out = ntohl(header->v3.sectorsize); - *align_out = ntohl(header->v3.alignment); + *mtime_out = be32toh(header->v3.mtime); + *size_out = be64toh(header->v3.size); + *sectorsize_out = be32toh(header->v3.sectorsize); + *align_out = be32toh(header->v3.alignment); if (*align_out == 0) { cow_printf("read_cow_header - invalid COW header, " "align == 0\n"); @@ -366,16 +365,16 @@ int read_cow_header(int (*reader)(__u64, char *, int, void *), void *arg, * this was used until Dec2005 - 64bits are needed to represent * 2038+. I.e. we can safely do this truncating cast. * - * Additionally, we must use ntohl() instead of ntohll(), since + * Additionally, we must use be32toh() instead of be64toh(), since * the program used to use the former (tested - I got mtime * mismatch "0 vs whatever"). * * Ever heard about bug-to-bug-compatibility ? ;-) */ - *mtime_out = (time32_t) ntohl(header->v3_b.mtime); + *mtime_out = (time32_t) be32toh(header->v3_b.mtime); - *size_out = ntohll(header->v3_b.size); - *sectorsize_out = ntohl(header->v3_b.sectorsize); - *align_out = ntohl(header->v3_b.alignment); + *size_out = be64toh(header->v3_b.size); + *sectorsize_out = be32toh(header->v3_b.sectorsize); + *align_out = be32toh(header->v3_b.alignment); if (*align_out == 0) { cow_printf("read_cow_header - invalid COW header, " "align == 0\n"); |