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-rw-r--r--fs/isofs/rock.c39
1 files changed, 22 insertions, 17 deletions
diff --git a/fs/isofs/rock.c b/fs/isofs/rock.c
index 283e92197bb1..aafe356ec1b7 100644
--- a/fs/isofs/rock.c
+++ b/fs/isofs/rock.c
@@ -37,18 +37,23 @@ static int check_sp(struct rock_ridge *rr, struct inode *inode)
return 0;
}
-#define SETUP_ROCK_RIDGE(DE,CHR,LEN) \
- {LEN= sizeof(struct iso_directory_record) + DE->name_len[0]; \
- if(LEN & 1) LEN++; \
- CHR = ((unsigned char *) DE) + LEN; \
- LEN = *((unsigned char *) DE) - LEN; \
- if (LEN<0) LEN=0; \
- if (ISOFS_SB(inode->i_sb)->s_rock_offset!=-1) \
- { \
- LEN-=ISOFS_SB(inode->i_sb)->s_rock_offset; \
- CHR+=ISOFS_SB(inode->i_sb)->s_rock_offset; \
- if (LEN<0) LEN=0; \
- } \
+static void setup_rock_ridge(struct iso_directory_record *de,
+ struct inode *inode, unsigned char **chr, int *len)
+{
+ *len = sizeof(struct iso_directory_record) + de->name_len[0];
+ if (*len & 1)
+ (*len)++;
+ *chr = (unsigned char *)de + *len;
+ *len = *((unsigned char *)de) - *len;
+ if (*len < 0)
+ *len = 0;
+
+ if (ISOFS_SB(inode->i_sb)->s_rock_offset != -1) {
+ *len -= ISOFS_SB(inode->i_sb)->s_rock_offset;
+ *chr += ISOFS_SB(inode->i_sb)->s_rock_offset;
+ if (*len < 0)
+ *len = 0;
+ }
}
#define MAYBE_CONTINUE(LABEL,DEV) \
@@ -98,7 +103,7 @@ int get_rock_ridge_filename(struct iso_directory_record *de,
return 0;
*retname = 0;
- SETUP_ROCK_RIDGE(de, chr, len);
+ setup_rock_ridge(de, inode, &chr, &len);
repeat:
while (len > 2) { /* There may be one byte for padding somewhere */
@@ -188,7 +193,7 @@ parse_rock_ridge_inode_internal(struct iso_directory_record *de,
if (!ISOFS_SB(inode->i_sb)->s_rock)
return 0;
- SETUP_ROCK_RIDGE(de, chr, len);
+ setup_rock_ridge(de, inode, &chr, &len);
if (regard_xa) {
chr += 14;
len -= 14;
@@ -527,7 +532,7 @@ static int rock_ridge_symlink_readpage(struct file *file, struct page *page)
struct buffer_head *bh;
char *rpnt = link;
unsigned char *pnt;
- struct iso_directory_record *raw_inode;
+ struct iso_directory_record *raw_de;
int cont_extent = 0;
int cont_offset = 0;
int cont_size = 0;
@@ -550,7 +555,7 @@ static int rock_ridge_symlink_readpage(struct file *file, struct page *page)
offset = ei->i_iget5_offset;
pnt = (unsigned char *)bh->b_data + offset;
- raw_inode = (struct iso_directory_record *)pnt;
+ raw_de = (struct iso_directory_record *)pnt;
/*
* If we go past the end of the buffer, there is some sort of error.
@@ -561,7 +566,7 @@ static int rock_ridge_symlink_readpage(struct file *file, struct page *page)
/* Now test for possible Rock Ridge extensions which will override
some of these numbers in the inode structure. */
- SETUP_ROCK_RIDGE(raw_inode, chr, len);
+ setup_rock_ridge(raw_de, inode, &chr, &len);
repeat:
while (len > 2) { /* There may be one byte for padding somewhere */