mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-11-09 17:15:43 +01:00
8403967669
Introduce the -K,--lock-dir parameter to specify the locking directory. If the locking is active, files card<NUM>.lock are used to serialize the multiple initialization requests (udev, service). Allow the relative -O,--lock-file argument (it's default now). Signed-off-by: Jaroslav Kysela <perex@perex.cz>
91 lines
3.4 KiB
C
91 lines
3.4 KiB
C
#include <stdbool.h>
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#include <alsa/asoundlib.h>
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#define LOCK_TIMEOUT 10
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extern int debugflag;
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extern int force_restore;
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extern int ignore_nocards;
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extern int do_lock;
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extern int use_syslog;
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extern char *command;
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extern char *statefile;
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extern char *lockpath;
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extern char *lockfile;
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struct snd_card_iterator {
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int card;
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char name[16];
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bool single;
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bool first;
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};
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void info_(const char *fcn, long line, const char *fmt, ...);
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void error_(const char *fcn, long line, const char *fmt, ...);
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void cerror_(const char *fcn, long line, int cond, const char *fmt, ...);
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void dbg_(const char *fcn, long line, const char *fmt, ...);
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void error_handler(const char *file, int line, const char *function, int err, const char *fmt, ...);
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#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
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#define info(...) do { info_(__func__, __LINE__, __VA_ARGS__); } while (0)
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#define error(...) do { error_(__func__, __LINE__, __VA_ARGS__); } while (0)
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#define cerror(cond, ...) do { cerror_(__func__, __LINE__, (cond) != 0, __VA_ARGS__); } while (0)
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#define dbg(...) do { dbg_(__func__, __LINE__, __VA_ARGS__); } while (0)
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#else
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#define info(args...) do { info_(__func__, __LINE__, ##args); } while (0)
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#define error(args...) do { error_(__func__, __LINE__, ##args); } while (0)
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#define cerror(cond, ...) do { error_(__func__, __LINE__, (cond) != 0, ##args); } while (0)
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#define dbg(args...) do { dbg_(__func__, __LINE__, ##args); } while (0)
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#endif
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#define FLAG_UCM_DISABLED (1<<0)
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#define FLAG_UCM_FBOOT (1<<1)
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#define FLAG_UCM_BOOT (1<<2)
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#define FLAG_UCM_DEFAULTS (1<<3)
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#define FLAG_UCM_NODEV (1<<4)
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void snd_card_iterator_init(struct snd_card_iterator *iter, int cardno);
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int snd_card_iterator_sinit(struct snd_card_iterator *iter, const char *cardname);
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const char *snd_card_iterator_next(struct snd_card_iterator *iter);
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int snd_card_iterator_error(struct snd_card_iterator *iter);
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int load_configuration(const char *file, snd_config_t **top, int *open_failed);
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int init(const char *cfgdir, const char *file, int flags, const char *cardname);
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int init_ucm(int flags, int cardno);
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int state_lock(const char *file, int timeout);
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int state_unlock(int lock_fd, const char *file);
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int card_lock(int card_number, int timeout);
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int card_unlock(int lock_fd, int card_number);
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int save_state(const char *file, const char *cardname);
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int load_state(const char *cfgdir, const char *file,
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const char *initfile, int initflags,
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const char *cardname, int do_init);
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int power(const char *argv[], int argc);
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int monitor(const char *name);
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int state_daemon(const char *file, const char *cardname, int period,
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const char *pidfile);
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int state_daemon_kill(const char *pidfile, const char *cmd);
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int clean(const char *cardname, char *const *extra_args);
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int snd_card_clean_cfgdir(const char *cfgdir, int cardno);
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/* utils */
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int file_map(const char *filename, char **buf, size_t *bufsize);
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void file_unmap(void *buf, size_t bufsize);
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size_t line_width(const char *buf, size_t bufsize, size_t pos);
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void initfailed(int cardnumber, const char *reason, int exitcode);
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static inline int hextodigit(int c)
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{
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if (c >= '0' && c <= '9')
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c -= '0';
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else if (c >= 'a' && c <= 'f')
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c = c - 'a' + 10;
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else if (c >= 'A' && c <= 'F')
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c = c - 'A' + 10;
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else
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return -1;
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return c;
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}
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#define ARRAY_SIZE(a) (sizeof (a) / sizeof (a)[0])
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