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Commit 74e2f334 authored by Török Edwin's avatar Török Edwin Committed by Ingo Molnar
Browse files

vfs, seqfile: make mangle_path() global 

Impact: expose new VFS API

make mangle_path() available, as per the suggestions of Christoph Hellwig
and Al Viro:

  http://lkml.org/lkml/2008/11/4/338



Signed-off-by: default avatarTörök Edwin <edwintorok@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 02b67518

fs/seq_file.c

+13 −1
Original line number Diff line number Diff line
@@ -357,7 +357,18 @@ int seq_printf(struct seq_file *m, const char *f, ...) 
}

EXPORT_SYMBOL(seq_printf);



static char *mangle_path(char *s, char *p, char *esc)

/**

 * 	mangle_path - mangle and copy path to buffer beginning

 * 	@s - buffer start

 * 	@p - beginning of path in above buffer

 *      @esc - set of characters that need escaping

 *

 *      Copy the path from @p to @s, replacing each occurrence of character from

 *      @esc with usual octal escape.

 *      Returns pointer past last written character in @s, or NULL in case of

 *      failure.

 */

char *mangle_path(char *s, char *p, char *esc)

{

	while (s <= p) {

		char c = *p++;
@@ -376,6 +387,7 @@ static char *mangle_path(char *s, char *p, char *esc) 
	}

	return NULL;

}

EXPORT_SYMBOL_GPL(mangle_path);



/*

 * return the absolute path of 'dentry' residing in mount 'mnt'.

include/linux/seq_file.h

+1 −0
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ struct seq_operations { 


#define SEQ_SKIP 1



char *mangle_path(char *s, char *p, char *esc);

int seq_open(struct file *, const struct seq_operations *);

ssize_t seq_read(struct file *, char __user *, size_t, loff_t *);

loff_t seq_lseek(struct file *, loff_t, int);