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62 lines
1.8 KiB
62 lines
1.8 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __API_FS__ |
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#define __API_FS__ |
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#include <stdbool.h> |
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#include <unistd.h> |
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/* |
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* On most systems <limits.h> would have given us this, but not on some systems |
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* (e.g. GNU/Hurd). |
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*/ |
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#ifndef PATH_MAX |
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#define PATH_MAX 4096 |
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#endif |
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#define FS(name) \ |
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const char *name##__mountpoint(void); \ |
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const char *name##__mount(void); \ |
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bool name##__configured(void); \ |
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/* |
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* The xxxx__mountpoint() entry points find the first match mount point for each |
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* filesystems listed below, where xxxx is the filesystem type. |
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* |
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* The interface is as follows: |
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* |
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* - If a mount point is found on first call, it is cached and used for all |
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* subsequent calls. |
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* |
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* - If a mount point is not found, NULL is returned on first call and all |
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* subsequent calls. |
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*/ |
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FS(sysfs) |
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FS(procfs) |
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FS(debugfs) |
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FS(tracefs) |
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FS(hugetlbfs) |
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FS(bpf_fs) |
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#undef FS |
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int cgroupfs_find_mountpoint(char *buf, size_t maxlen, const char *subsys); |
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int filename__read_int(const char *filename, int *value); |
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int filename__read_ull(const char *filename, unsigned long long *value); |
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int filename__read_xll(const char *filename, unsigned long long *value); |
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int filename__read_str(const char *filename, char **buf, size_t *sizep); |
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int filename__write_int(const char *filename, int value); |
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int procfs__read_str(const char *entry, char **buf, size_t *sizep); |
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int sysctl__read_int(const char *sysctl, int *value); |
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int sysfs__read_int(const char *entry, int *value); |
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int sysfs__read_ull(const char *entry, unsigned long long *value); |
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int sysfs__read_xll(const char *entry, unsigned long long *value); |
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int sysfs__read_str(const char *entry, char **buf, size_t *sizep); |
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int sysfs__read_bool(const char *entry, bool *value); |
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int sysfs__write_int(const char *entry, int value); |
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#endif /* __API_FS__ */
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