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01c4ac1315
o Created dmfs.h as a private header for the filesystem code o Using seq_file.[ch] written by Al Viro as a generic mechanism for /proc style files which have one record per line. We use a slight modification here, so if you are using a recent -ac kernel you'll need to replace the existing seq_file.[ch] with the ones here and do a bit of editing to make it work. I'll submit the changes to Al Viro shortly as they are very small and I think make sense generally. o Using fail_writepage() o Init code for filesystem now all in dmfs-super.c o Some common code reduction amoung the dmfs-*.c files o Auto allocation of major device number (default). You can specify a particular major by using a module argument. If built in then you don't get this option at the moment but it could be added if required. o Hotplug support o General tidying o Updated projects.txt file o Patches updated to 2.4.14
61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
/*
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* Original file by Al Viro. This is a slight modification which I'll
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* pass on to Al Viro shortly.
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*/
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#ifndef _LINUX_SEQ_FILE_H
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#define _LINUX_SEQ_FILE_H
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#ifdef __KERNEL__
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struct seq_operations;
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struct seq_file {
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char *buf;
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size_t size;
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size_t from;
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size_t count;
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loff_t index;
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struct semaphore sem;
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struct seq_operations *op;
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void *context;
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};
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struct seq_operations {
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void * (*start) (void *context, loff_t *pos);
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void (*stop) (void *context, void *v);
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void * (*next) (void *context, void *v, loff_t *pos);
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int (*show) (struct seq_file *m, void *v);
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};
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int seq_open(struct file *, struct seq_operations *, void *context);
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ssize_t seq_read(struct file *, char *, size_t, loff_t *);
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loff_t seq_lseek(struct file *, loff_t, int);
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int seq_release(struct inode *, struct file *);
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int seq_escape(struct seq_file *, const char *, const char *);
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static inline int seq_putc(struct seq_file *m, char c)
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{
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if (m->count < m->size) {
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m->buf[m->count++] = c;
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return 0;
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}
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return -1;
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}
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static inline int seq_puts(struct seq_file *m, const char *s)
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{
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int len = strlen(s);
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if (m->count + len < m->size) {
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memcpy(m->buf + m->count, s, len);
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m->count += len;
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return 0;
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}
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m->count = m->size;
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return -1;
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}
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int seq_printf(struct seq_file *, const char *, ...)
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__attribute__ ((format (printf,2,3)));
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#endif
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#endif
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