| 1 |
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| 2 | #ifndef __API_FS__
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| 3 | #define __API_FS__
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| 4 |
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| 5 | #include <stdbool.h>
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| 6 | #include <unistd.h>
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| 7 |
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| 8 | |
| 9 | * On most systems <limits.h> would have given us this, but not on some systems
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| 10 | * (e.g. GNU/Hurd).
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| 11 |
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| 12 | #ifndef PATH_MAX
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| 13 | #define PATH_MAX 4096
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| 14 | #endif
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| 15 |
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| 16 | #define FS(name) \
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| 17 | const char *name##__mountpoint(void); \
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| 18 | const char *name##__mount(void); \
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| 19 | bool name##__configured(void); \
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| 20 |
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| 21 | |
| 22 | * The xxxx__mountpoint() entry points find the first match mount point for each
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| 23 | * filesystems listed below, where xxxx is the filesystem type.
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| 24 | *
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| 25 | * The interface is as follows:
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| 26 | *
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| 27 | * - If a mount point is found on first call, it is cached and used for all
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| 28 | * subsequent calls.
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| 29 | *
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| 30 | * - If a mount point is not found, NULL is returned on first call and all
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| 31 | * subsequent calls.
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| 32 |
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| 33 | FS(sysfs)
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| 34 | FS(procfs)
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| 35 | FS(debugfs)
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| 36 | FS(tracefs)
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| 37 | FS(hugetlbfs)
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| 38 | FS(bpf_fs)
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| 39 |
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| 40 | #undef FS
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| 41 |
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| 42 |
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| 43 | int cgroupfs_find_mountpoint(char *buf, size_t maxlen, const char *subsys);
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| 44 |
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| 45 | int filename__read_int(const char *filename, int *value);
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| 46 | int filename__read_ull(const char *filename, unsigned long long *value);
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| 47 | int filename__read_xll(const char *filename, unsigned long long *value);
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| 48 | int filename__read_str(const char *filename, char **buf, size_t *sizep);
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| 49 |
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| 50 | int filename__write_int(const char *filename, int value);
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| 51 |
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| 52 | int procfs__read_str(const char *entry, char **buf, size_t *sizep);
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| 53 |
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| 54 | int sysctl__read_int(const char *sysctl, int *value);
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| 55 | int sysfs__read_int(const char *entry, int *value);
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| 56 | int sysfs__read_ull(const char *entry, unsigned long long *value);
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| 57 | int sysfs__read_xll(const char *entry, unsigned long long *value);
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| 58 | int sysfs__read_str(const char *entry, char **buf, size_t *sizep);
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| 59 | int sysfs__read_bool(const char *entry, bool *value);
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| 60 |
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| 61 | int sysfs__write_int(const char *entry, int value);
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| 62 | #endif
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