diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2011-09-19 14:25:20 +0300 |
|---|---|---|
| committer | Artem Bityutskiy <artem.bityutskiy@intel.com> | 2011-09-21 09:34:56 +0300 |
| commit | 208ba19802cce7359a8ca1626aad9045e16e6808 (patch) | |
| tree | ab1517bb45531df8a0ac2122ef84d129c9492853 | |
| parent | 8c0328f9e32b03b9197c89c5902c50cbc01ee332 (diff) | |
jffs2reader: introduce ADD_BYTES macro
This macro is dedicated to get rid of the compiler errors:
lvalue required as left operand of assignment
Signed-off-by: Alexey Dokuchaev <danfe@nsu.ru>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
| -rw-r--r-- | jffs2reader.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/jffs2reader.c b/jffs2reader.c index 1a211db..ef9dbe3 100644 --- a/jffs2reader.c +++ b/jffs2reader.c @@ -88,6 +88,9 @@ BUGS: #define MINOR(dev) ((dev)&0xff) #endif +/* macro to avoid "lvalue required as left operand of assignment" error */ +#define ADD_BYTES(p, n) ((p) = (typeof(p))((char *)(p) + (n))) + #define DIRENT_INO(dirent) ((dirent) !=NULL ? je32_to_cpu((dirent)->ino) : 0) #define DIRENT_PINO(dirent) ((dirent) !=NULL ? je32_to_cpu((dirent)->pino) : 0) @@ -441,7 +444,7 @@ struct jffs2_raw_inode *find_raw_inode(char *o, size_t size, uint32_t ino) do { while (n < e && je16_to_cpu(n->u.magic) != JFFS2_MAGIC_BITMASK) - ((char *) n) += 4; + ADD_BYTES(n, 4); if (n < e && je16_to_cpu(n->u.magic) == JFFS2_MAGIC_BITMASK) { if (je16_to_cpu(n->u.nodetype) == JFFS2_NODETYPE_INODE && @@ -459,7 +462,7 @@ struct jffs2_raw_inode *find_raw_inode(char *o, size_t size, uint32_t ino) return (&(n->i)); } - ((char *) n) += ((je32_to_cpu(n->u.totlen) + 3) & ~3); + ADD_BYTES(n, ((je32_to_cpu(n->u.totlen) + 3) & ~3)); } else n = (union jffs2_node_union *) o; /* we're at the end, rewind to the beginning */ @@ -509,7 +512,7 @@ struct dir *collectdir(char *o, size_t size, uint32_t ino, struct dir *d) do { while (n < e && je16_to_cpu(n->u.magic) != JFFS2_MAGIC_BITMASK) - ((char *) n) += 4; + ADD_BYTES(n, 4); if (n < e && je16_to_cpu(n->u.magic) == JFFS2_MAGIC_BITMASK) { if (je16_to_cpu(n->u.nodetype) == JFFS2_NODETYPE_DIRENT && @@ -532,7 +535,7 @@ struct dir *collectdir(char *o, size_t size, uint32_t ino, struct dir *d) } } - ((char *) n) += ((je32_to_cpu(n->u.totlen) + 3) & ~3); + ADD_BYTES(n, ((je32_to_cpu(n->u.totlen) + 3) & ~3)); } else n = (union jffs2_node_union *) o; /* we're at the end, rewind to the beginning */ @@ -596,7 +599,7 @@ struct jffs2_raw_dirent *resolvedirent(char *o, size_t size, do { while (n < e && je16_to_cpu(n->u.magic) != JFFS2_MAGIC_BITMASK) - ((char *) n) += 4; + ADD_BYTES(n, 4); if (n < e && je16_to_cpu(n->u.magic) == JFFS2_MAGIC_BITMASK) { if (je16_to_cpu(n->u.nodetype) == JFFS2_NODETYPE_DIRENT && @@ -613,7 +616,7 @@ struct jffs2_raw_dirent *resolvedirent(char *o, size_t size, } } - ((char *) n) += ((je32_to_cpu(n->u.totlen) + 3) & ~3); + ADD_BYTES(n, ((je32_to_cpu(n->u.totlen) + 3) & ~3)); } else return dd; } while (1); |