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capability.h
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/* * <sys/capability.h> * * Copyright (C) 1997 Aleph One * Copyright (C) 1997-8,2008 Andrew G. Morgan <morgan@kernel.org> * * defunct POSIX.1e Standard: 25.2 Capabilities <sys/capability.h> */ #ifndef _SYS_CAPABILITY_H #define _SYS_CAPABILITY_H #ifdef __cplusplus extern "C" { #endif /* * This file complements the kernel file by providing prototype * information for the user library. */ #include <sys/types.h> #include <stdint.h> #include <linux/types.h> #ifndef __user #define __user #endif #include <linux/capability.h> /* * POSIX capability types */ /* * Opaque capability handle (defined internally by libcap) * internal capability representation */ typedef struct _cap_struct *cap_t; /* "external" capability representation is a (void *) */ /* * This is the type used to identify capabilities */ typedef int cap_value_t; /* * Set identifiers */ typedef enum { CAP_EFFECTIVE=0, /* Specifies the effective flag */ CAP_PERMITTED=1, /* Specifies the permitted flag */ CAP_INHERITABLE=2 /* Specifies the inheritable flag */ } cap_flag_t; /* * These are the states available to each capability */ typedef enum { CAP_CLEAR=0, /* The flag is cleared/disabled */ CAP_SET=1 /* The flag is set/enabled */ } cap_flag_value_t; /* * User-space capability manipulation routines */ /* libcap/cap_alloc.c */ extern cap_t cap_dup(cap_t); extern int cap_free(void *); extern cap_t cap_init(void); /* libcap/cap_flag.c */ extern int cap_get_flag(cap_t, cap_value_t, cap_flag_t, cap_flag_value_t *); extern int cap_set_flag(cap_t, cap_flag_t, int, const cap_value_t *, cap_flag_value_t); extern int cap_clear(cap_t); extern int cap_clear_flag(cap_t, cap_flag_t); /* libcap/cap_file.c */ extern cap_t cap_get_fd(int); extern cap_t cap_get_file(const char *); extern uid_t cap_get_nsowner(cap_t); extern int cap_set_fd(int, cap_t); extern int cap_set_file(const char *, cap_t); extern int cap_set_nsowner(cap_t, uid_t); /* libcap/cap_proc.c */ extern cap_t cap_get_proc(void); extern cap_t cap_get_pid(pid_t); extern int cap_set_proc(cap_t); extern int cap_get_bound(cap_value_t); extern int cap_drop_bound(cap_value_t); #define CAP_IS_SUPPORTED(cap) (cap_get_bound(cap) >= 0) extern int cap_get_ambient(cap_value_t); extern int cap_set_ambient(cap_value_t, cap_flag_value_t); extern int cap_reset_ambient(void); #define CAP_AMBIENT_SUPPORTED() (cap_get_ambient(CAP_CHOWN) >= 0) /* libcap/cap_extint.c */ extern ssize_t cap_size(cap_t); extern ssize_t cap_copy_ext(void *, cap_t, ssize_t); extern cap_t cap_copy_int(const void *); /* libcap/cap_text.c */ extern cap_t cap_from_text(const char *); extern char * cap_to_text(cap_t, ssize_t *); extern int cap_from_name(const char *, cap_value_t *); extern char * cap_to_name(cap_value_t); #define CAP_DIFFERS(result, flag) (((result) & (1 << (flag))) != 0) extern int cap_compare(cap_t, cap_t); /* system calls - look to libc for function to system call mapping */ extern int capset(cap_user_header_t header, cap_user_data_t data); extern int capget(cap_user_header_t header, const cap_user_data_t data); /* deprecated - use cap_get_pid() */ extern int capgetp(pid_t pid, cap_t cap_d); /* not valid with filesystem capability support - use cap_set_proc() */ extern int capsetp(pid_t pid, cap_t cap_d); #ifdef __cplusplus } #endif #endif /* _SYS_CAPABILITY_H */