diff options
| -rw-r--r-- | fs/isofs/rock.c | 39 |
1 files changed, 22 insertions, 17 deletions
diff --git a/fs/isofs/rock.c b/fs/isofs/rock.c index 283e92197bb..aafe356ec1b 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 */ |