From 80886298c07234331458e963b5f9f57c68edd700 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 15 May 2013 18:51:49 -0400 Subject: [readdir] simple local unixlike: switch to ->iterate() ext2, ufs, minix, sysv Signed-off-by: Al Viro --- fs/minix/dir.c | 42 +++++++++++++++++++----------------------- 1 file changed, 19 insertions(+), 23 deletions(-) (limited to 'fs/minix') diff --git a/fs/minix/dir.c b/fs/minix/dir.c index a9ed6f36e6ea..08c442902fcd 100644 --- a/fs/minix/dir.c +++ b/fs/minix/dir.c @@ -16,12 +16,12 @@ typedef struct minix_dir_entry minix_dirent; typedef struct minix3_dir_entry minix3_dirent; -static int minix_readdir(struct file *, void *, filldir_t); +static int minix_readdir(struct file *, struct dir_context *); const struct file_operations minix_dir_operations = { .llseek = generic_file_llseek, .read = generic_read_dir, - .readdir = minix_readdir, + .iterate = minix_readdir, .fsync = generic_file_fsync, }; @@ -82,22 +82,23 @@ static inline void *minix_next_entry(void *de, struct minix_sb_info *sbi) return (void*)((char*)de + sbi->s_dirsize); } -static int minix_readdir(struct file * filp, void * dirent, filldir_t filldir) +static int minix_readdir(struct file *file, struct dir_context *ctx) { - unsigned long pos = filp->f_pos; - struct inode *inode = file_inode(filp); + struct inode *inode = file_inode(file); struct super_block *sb = inode->i_sb; - unsigned offset = pos & ~PAGE_CACHE_MASK; - unsigned long n = pos >> PAGE_CACHE_SHIFT; - unsigned long npages = dir_pages(inode); struct minix_sb_info *sbi = minix_sb(sb); unsigned chunk_size = sbi->s_dirsize; - char *name; - __u32 inumber; + unsigned long npages = dir_pages(inode); + unsigned long pos = ctx->pos; + unsigned offset; + unsigned long n; - pos = (pos + chunk_size-1) & ~(chunk_size-1); + ctx->pos = pos = (pos + chunk_size-1) & ~(chunk_size-1); if (pos >= inode->i_size) - goto done; + return 0; + + offset = pos & ~PAGE_CACHE_MASK; + n = pos >> PAGE_CACHE_SHIFT; for ( ; n < npages; n++, offset = 0) { char *p, *kaddr, *limit; @@ -109,6 +110,8 @@ static int minix_readdir(struct file * filp, void * dirent, filldir_t filldir) p = kaddr+offset; limit = kaddr + minix_last_byte(inode, n) - chunk_size; for ( ; p <= limit; p = minix_next_entry(p, sbi)) { + const char *name; + __u32 inumber; if (sbi->s_version == MINIX_V3) { minix3_dirent *de3 = (minix3_dirent *)p; name = de3->name; @@ -119,24 +122,17 @@ static int minix_readdir(struct file * filp, void * dirent, filldir_t filldir) inumber = de->inode; } if (inumber) { - int over; - unsigned l = strnlen(name, sbi->s_namelen); - offset = p - kaddr; - over = filldir(dirent, name, l, - (n << PAGE_CACHE_SHIFT) | offset, - inumber, DT_UNKNOWN); - if (over) { + if (!dir_emit(ctx, name, l, + inumber, DT_UNKNOWN)) { dir_put_page(page); - goto done; + return 0; } } + ctx->pos += chunk_size; } dir_put_page(page); } - -done: - filp->f_pos = (n << PAGE_CACHE_SHIFT) | offset; return 0; } -- cgit v1.2.3