diff options
| author | Karel Zak | 2011-05-16 14:08:50 +0200 |
|---|---|---|
| committer | Karel Zak | 2011-05-16 20:22:52 +0200 |
| commit | 7fe16fdaf40283cd8ff6fd05958f9f9aa3811409 (patch) | |
| tree | 73c7924833bc8514a7f91e7ece4b9f01ae8115bf /include | |
| parent | libblkid: use cached buffers for nested PT probing (diff) | |
| download | kernel-qcow2-util-linux-7fe16fdaf40283cd8ff6fd05958f9f9aa3811409.tar.gz kernel-qcow2-util-linux-7fe16fdaf40283cd8ff6fd05958f9f9aa3811409.tar.xz kernel-qcow2-util-linux-7fe16fdaf40283cd8ff6fd05958f9f9aa3811409.zip | |
lib: add generic sysfs utils
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/at.h | 4 | ||||
| -rw-r--r-- | include/sysfs.h | 57 |
2 files changed, 61 insertions, 0 deletions
diff --git a/include/at.h b/include/at.h index 17c70d1ed..8e0a78db6 100644 --- a/include/at.h +++ b/include/at.h @@ -10,6 +10,10 @@ #define UTIL_LINUX_AT_H #include <stdio.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> + #include "c.h" extern int fstat_at(int dir, const char *dirname, diff --git a/include/sysfs.h b/include/sysfs.h new file mode 100644 index 000000000..bbb3816c2 --- /dev/null +++ b/include/sysfs.h @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2011 Karel Zak <kzak@redhat.com> + */ +#ifndef UTIL_LINUX_SYSFS_H +#define UTIL_LINUX_SYSFS_H + + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <stdint.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <dirent.h> +#include <fcntl.h> +#include <string.h> +#include <inttypes.h> +#include <sys/types.h> +#include <dirent.h> + +struct sysfs_cxt { + dev_t devno; + int dir_fd; /* /sys/block/<name> */ + char *dir_path; + struct sysfs_cxt *parent; +}; + + +extern char *sysfs_devno_attribute_path(dev_t devno, char *buf, + size_t buflen, const char *attr); +extern int sysfs_devno_has_attribute(dev_t devno, const char *attr); +extern char *sysfs_devno_path(dev_t devno, char *buf, size_t buflen); +extern dev_t sysfs_devname_to_devno(const char *name, const char *parent); + +extern int sysfs_init(struct sysfs_cxt *cxt, dev_t devno, + struct sysfs_cxt *parent); +extern void sysfs_deinit(struct sysfs_cxt *cxt); + +extern DIR *sysfs_opendir(struct sysfs_cxt *cxt, const char *attr); + +extern int sysfs_stat(struct sysfs_cxt *cxt, const char *attr, struct stat *st); + +extern int sysfs_scanf(struct sysfs_cxt *cxt, const char *attr, + const char *fmt, ...) + __attribute__ ((format (scanf, 3, 4))); +extern int64_t sysfs_read_s64(struct sysfs_cxt *cxt, const char *attr); +extern uint64_t sysfs_read_u64(struct sysfs_cxt *cxt, const char *attr); +extern int sysfs_read_int(struct sysfs_cxt *cxt, const char *attr); +extern char *sysfs_strdup(struct sysfs_cxt *cxt, const char *attr); + +extern int sysfs_count_dirents(struct sysfs_cxt *cxt, const char *attr); +extern int sysfs_count_partitions(struct sysfs_cxt *cxt, const char *devname); + +extern int sysfs_is_partition_dirent(DIR *dir, struct dirent *d, + const char *parent_name); + +#endif /* UTIL_LINUX_SYSFS_H */ |