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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/shared/udev-util.h | |
parent | Initial commit. (diff) | |
download | systemd-upstream.tar.xz systemd-upstream.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/shared/udev-util.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/src/shared/udev-util.h b/src/shared/udev-util.h new file mode 100644 index 0000000..c3c3dbe --- /dev/null +++ b/src/shared/udev-util.h @@ -0,0 +1,87 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#if HAVE_SYS_SDT_H +#define SDT_USE_VARIADIC +#include <sys/sdt.h> +#endif + +#include "sd-device.h" + +#include "time-util.h" + +#define UDEV_NAME_SIZE 512 +#define UDEV_PATH_SIZE 1024 +#define UDEV_LINE_SIZE 16384 + +typedef enum ResolveNameTiming { + RESOLVE_NAME_NEVER, + RESOLVE_NAME_LATE, + RESOLVE_NAME_EARLY, + _RESOLVE_NAME_TIMING_MAX, + _RESOLVE_NAME_TIMING_INVALID = -EINVAL, +} ResolveNameTiming; + +ResolveNameTiming resolve_name_timing_from_string(const char *s) _pure_; +const char *resolve_name_timing_to_string(ResolveNameTiming i) _const_; + +int udev_parse_config_full( + unsigned *ret_children_max, + usec_t *ret_exec_delay_usec, + usec_t *ret_event_timeout_usec, + ResolveNameTiming *ret_resolve_name_timing, + int *ret_timeout_signal); + +static inline int udev_parse_config(void) { + return udev_parse_config_full(NULL, NULL, NULL, NULL, NULL); +} + +int device_wait_for_initialization(sd_device *device, const char *subsystem, usec_t timeout_usec, sd_device **ret); +int device_wait_for_devlink(const char *path, const char *subsystem, usec_t timeout_usec, sd_device **ret); +int device_is_renaming(sd_device *dev); + +bool device_for_action(sd_device *dev, sd_device_action_t action); + +void log_device_uevent(sd_device *device, const char *str); + +int udev_rule_parse_value(char *str, char **ret_value, char **ret_endpos); +size_t udev_replace_whitespace(const char *str, char *to, size_t len); +size_t udev_replace_ifname(char *str); +size_t udev_replace_chars(char *str, const char *allow); +int udev_resolve_subsys_kernel(const char *string, char *result, size_t maxsize, bool read_value); + +bool devpath_conflict(const char *a, const char *b); + +int udev_queue_is_empty(void); +int udev_queue_init(void); + +int on_ac_power(void); + +bool udev_available(void); + +#if HAVE_SYS_SDT_H + +/* Each trace point can have different number of additional arguments. Note that when the macro is used only + * additional arguments are listed in the macro invocation! + * + * Default arguments for each trace point are as follows: + * - arg0 - action + * - arg1 - sysname + * - arg2 - syspath + * - arg3 - subsystem + */ +#define DEVICE_TRACE_POINT(name, dev, ...) \ + do { \ + PROTECT_ERRNO; \ + const char *_n = NULL, *_p = NULL, *_s = NULL; \ + sd_device *_d = (dev); \ + sd_device_action_t _a = _SD_DEVICE_ACTION_INVALID; \ + (void) sd_device_get_action(_d, &_a); \ + (void) sd_device_get_sysname(_d, &_n); \ + (void) sd_device_get_syspath(_d, &_p); \ + (void) sd_device_get_subsystem(_d, &_s); \ + STAP_PROBEV(udev, name, device_action_to_string(_a), _n, _p, _s __VA_OPT__(,) __VA_ARGS__);\ + } while (false); +#else +#define DEVICE_TRACE_POINT(name, dev, ...) ((void) 0) +#endif |