mirror of https://github.com/schoebel/mars
174 lines
6.4 KiB
C
174 lines
6.4 KiB
C
// (c) 2010 Thomas Schoebel-Theuer / 1&1 Internet AG
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// OLD CODE => will disappear!
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#ifndef _OLD_STRATEGY
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#define _OLD_STRATEGY
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#define _STRATEGY // call this only in strategy bricks, never in ordinary bricks
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#include "../mars.h"
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#define MARS_ARGV_MAX 4
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#define MARS_PATH_MAX 256
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extern int global_logrot_auto;
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extern int global_logdel_auto;
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extern int global_free_space;
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extern char *my_id(void);
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#define MARS_DENT(TYPE) \
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struct list_head dent_link; \
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struct list_head brick_list; \
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struct TYPE *d_parent; \
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char *d_argv[MARS_ARGV_MAX]; /* for internal use, will be automatically deallocated*/ \
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char *d_args; /* ditto uninterpreted */ \
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char *d_name; /* current path component */ \
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char *d_rest; /* some "meaningful" rest of d_name*/ \
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char *d_path; /* full absolute path */ \
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struct say_channel *d_say_channel; /* for messages */ \
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int d_namelen; \
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int d_pathlen; \
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int d_depth; \
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unsigned int d_type; /* from readdir() => often DT_UNKNOWN => don't rely on it, use new_stat.mode instead */ \
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int d_class; /* for pre-grouping order */ \
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int d_serial; /* for pre-grouping order */ \
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int d_version; /* dynamic programming per call of mars_ent_work() */ \
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char d_once_error; \
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bool d_killme; \
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bool d_use_channel; \
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struct kstat new_stat; \
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struct kstat old_stat; \
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char *new_link; \
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char *old_link; \
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struct mars_global *d_global; \
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void (*d_private_destruct)(void *private); \
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void *d_private;
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struct mars_dent {
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MARS_DENT(mars_dent);
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};
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extern const struct meta mars_kstat_meta[];
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extern const struct meta mars_dent_meta[];
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struct mars_global {
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struct rw_semaphore dent_mutex;
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struct rw_semaphore brick_mutex;
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struct generic_switch global_power;
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struct list_head dent_anchor;
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struct list_head brick_anchor;
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struct list_head server_anchor;
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wait_queue_head_t main_event;
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loff_t total_space;
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loff_t remaining_space;
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int global_version;
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int deleted_border;
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int deleted_min;
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bool main_trigger;
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bool exhausted;
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bool jammed;
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};
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extern void bind_to_dent(struct mars_dent *dent, struct say_channel **ch);
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typedef int (*mars_dent_checker_fn)(struct mars_dent *parent, const char *name, int namlen, unsigned int d_type, int *prefix, int *serial, bool *use_channel);
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typedef int (*mars_dent_worker_fn)(struct mars_global *global, struct mars_dent *dent, bool prepare, bool direction);
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extern int mars_dent_work(struct mars_global *global, char *dirname, int allocsize, mars_dent_checker_fn checker, mars_dent_worker_fn worker, void *buf, int maxdepth);
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extern struct mars_dent *_mars_find_dent(struct mars_global *global, const char *path);
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extern struct mars_dent *mars_find_dent(struct mars_global *global, const char *path);
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extern int mars_find_dent_all(struct mars_global *global, char *prefix, struct mars_dent ***table);
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extern void mars_kill_dent(struct mars_dent *dent);
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extern void mars_free_dent(struct mars_dent *dent);
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extern void mars_free_dent_all(struct mars_global *global, struct list_head *anchor);
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// low-level brick instantiation
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extern struct mars_brick *mars_find_brick(struct mars_global *global, const void *brick_type, const char *path);
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extern struct mars_brick *mars_make_brick(struct mars_global *global, struct mars_dent *belongs, bool is_server, const void *_brick_type, const char *path, const char *name);
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extern int mars_free_brick(struct mars_brick *brick);
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extern int mars_kill_brick(struct mars_brick *brick);
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extern int mars_kill_brick_all(struct mars_global *global, struct list_head *anchor, bool use_dent_link);
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extern int mars_kill_brick_when_possible(struct mars_global *global, struct list_head *anchor, bool use_dent_link, const struct mars_brick_type *type, bool only_off);
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// mid-level brick instantiation (identity is based on path strings)
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extern char *_vpath_make(int line, const char *fmt, va_list *args);
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extern char *_path_make(int line, const char *fmt, ...);
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extern char *_backskip_replace(int line, const char *path, char delim, bool insert, const char *fmt, ...);
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#define vpath_make(_fmt, _args) \
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_vpath_make(__LINE__, _fmt, _args)
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#define path_make(_fmt, _args...) \
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_path_make(__LINE__, _fmt, ##_args)
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#define backskip_replace(_path, _delim, _insert, _fmt, _args...) \
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_backskip_replace(__LINE__, _path, _delim, _insert, _fmt, ##_args)
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extern struct mars_brick *path_find_brick(struct mars_global *global, const void *brick_type, const char *fmt, ...);
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/* Create a new brick and connect its inputs to a set of predecessors.
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* When @timeout > 0, switch on the brick as well as its predecessors.
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*/
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extern struct mars_brick *make_brick_all(
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struct mars_global *global,
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struct mars_dent *belongs,
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bool is_server,
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int (*setup_fn)(struct mars_brick *brick, void *private),
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void *private,
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int timeout,
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const char *new_name,
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const struct generic_brick_type *new_brick_type,
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const struct generic_brick_type *prev_brick_type[],
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const char *switch_fmt,
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int switch_override, // -1 = off, +1 = on, 0 = let switch decide
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const char *new_fmt,
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const char *prev_fmt[],
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int prev_count,
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...
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);
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// general MARS infrastructure
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#define MARS_ERR_ONCE(dent, args...) if (!dent->d_once_error++) MARS_ERR(args)
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/* General fs wrappers (for abstraction)
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*/
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extern int mars_stat(const char *path, struct kstat *stat, bool use_lstat);
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extern int mars_mkdir(const char *path);
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extern int mars_unlink(const char *path);
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extern int mars_symlink(const char *oldpath, const char *newpath, const struct timespec *stamp, uid_t uid);
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extern int mars_rename(const char *oldpath, const char *newpath);
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extern int mars_chmod(const char *path, mode_t mode);
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extern int mars_lchown(const char *path, uid_t uid);
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extern void mars_remaining_space(const char *fspath, loff_t *total, loff_t *remaining);
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/////////////////////////////////////////////////////////////////////////
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extern struct mars_global *mars_global;
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extern int mars_power_button(struct mars_brick *brick, bool val, bool force_off);
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extern int mars_power_button_recursive(struct mars_brick *brick, bool val, bool force_off, int timeout);
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/////////////////////////////////////////////////////////////////////////
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// quirk
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#ifdef CONFIG_MARS_LOADAVG_LIMIT
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extern int mars_max_loadavg;
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#endif
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extern int mars_mem_percent;
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/////////////////////////////////////////////////////////////////////////
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// init
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extern int init_sy(void);
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extern void exit_sy(void);
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extern int init_sy_net(void);
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extern void exit_sy_net(void);
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#endif
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