/* -*- mode:c; c-file-style:"k&r"; c-basic-offset: 4; tab-width:4; indent-tabs-mode:nil; mode:auto-fill; fill-column:78; -*- */
/* vim: set ts=4 sw=4 et tw=78 fo=cqt wm=0: */
/* Copyright (C) 2014 Stony Brook University
This file is part of Graphene Library OS.
Graphene Library OS is free software: you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public License
as published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
Graphene Library OS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see . */
#ifndef API_H
#define API_H
#include
#include
#include
/* WARNING: this declaration may conflict with some header files */
#ifndef ssize_t
typedef ptrdiff_t ssize_t;
#endif
/* Macros */
#ifndef likely
# define likely(x) __builtin_expect((!!(x)),1)
#endif
#ifndef unlikely
# define unlikely(x) __builtin_expect((!!(x)),0)
#endif
#ifndef MIN
# define MIN(a, b) ((a) < (b) ? (a) : (b))
#endif
#ifndef MAX
# define MAX(a, b) ((a) > (b) ? (a) : (b))
#endif
#define ALIGN_DOWN_PTR(ptr, size) \
((__typeof__(ptr)) (((uintptr_t)(ptr)) & -(size)))
#define ALIGN_UP_PTR(ptr, size) \
((__typeof__(ptr)) ALIGN_DOWN_PTR((uintptr_t)(ptr) + ((size) - 1), (size)))
#ifndef container_of
/**
* container_of - cast a member of a structure out to the containing structure
* @ptr: the pointer to the member.
* @type: the type of the container struct this is embedded in.
* @member: the name of the member within the struct.
*
*/
# define container_of(ptr, type, member) ((type *)((char *)(ptr) - offsetof(type, member)))
#endif
#define __alloca __builtin_alloca
#define XSTRINGIFY(x) STRINGIFY(x)
#define STRINGIFY(x) #x
#define static_strlen(str) (sizeof(str) - 1)
/* Turning off unused-parameter warning for keeping function signatures */
#define __UNUSED(x) do { (void)(x); } while (0)
/* Libc functions */
/* Libc String functions string.h/stdlib.h */
size_t strnlen (const char *str, size_t maxlen);
size_t strlen (const char *str);
long strtol (const char *s, char **endptr, int base);
int atoi (const char *nptr);
long int atol (const char *nptr);
char * strchr (const char *s, int c_in);
void * memcpy (void *dstpp, const void *srcpp, size_t len);
void * memmove (void *dstpp, const void *srcpp, size_t len);
void * memset (void *dstpp, int c, size_t len);
int memcmp (const void *s1, const void *s2, size_t len);
/* Libc memory allocation functions. stdlib.h. */
void *malloc(size_t size);
void free(void *ptr);
void *calloc(size_t nmemb, size_t size);
/* Some useful macro */
/* force failure if str is not a static string */
#define force_static(str) ("" str "")
/* check if the var is exactly the same as the static string */
#define strcmp_static(var, str) \
(!memcmp((var), force_static(str), static_strlen(force_static(str)) + 1))
/* check if the var starts with the static string */
#define strpartcmp_static(var, str) \
(!memcmp((var), force_static(str), static_strlen(force_static(str))))
/* copy static string and return the address of the null end (null if the dest
* is not large enough).*/
#define strcpy_static(var, str, max) \
(static_strlen(force_static(str)) + 1 > max ? NULL : \
memcpy((var), force_static(str), static_strlen(force_static(str)) + 1) + \
static_strlen(force_static(str)))
/* Copy a fixed size array. */
#define COPY_ARRAY(dst, src) \
do { \
/* Using pointers because otherwise the compiler would try to allocate \
* memory for the fixed size arrays and complain about invalid \
* initializers. \
*/ \
__typeof__(src)* _s = &(src); \
__typeof__(dst)* _d = &(dst); \
\
__typeof__((*_s)[0]) _s2[sizeof(*_s)/sizeof((*_s)[0])]; \
__typeof__((*_d)[0]) _d2[sizeof(*_d)/sizeof((*_d)[0])]; \
\
/* Causes a compiler warning if the array types mismatch. */ \
(void) (_s == _d); \
\
/* Causes a compiler warning if passed arrays are not fixed size \
* arrays. \
*/ \
(void) (_s == &_s2); \
(void) (_d == &_d2); \
\
/* Double check sizes. */ \
_Static_assert(sizeof(*_s) == sizeof(*_d), "sizes don't match"); \
\
memcpy(*_d, *_s, sizeof(*_d)); \
} while (0)
/* Libc printf functions. stdio.h/stdarg.h. */
void fprintfmt (int (*_fputch)(void *, int, void *), void * f, void * putdat,
const char * fmt, ...);
void vfprintfmt (int (*_fputch)(void *, int, void *), void * f, void * putdat,
const char * fmt, va_list *ap);
int snprintf (char * buf, int n, const char * fmt, ...);
/* Miscelleneous */
int inet_pton4 (const char *src, int len, void *dst);
int inet_pton6 (const char *src, int len, void *dst);
uint32_t __htonl (uint32_t x);
uint32_t __ntohl (uint32_t x);
uint16_t __htons (uint16_t x);
uint16_t __ntohs (uint16_t x);
extern const char * const * sys_errlist_internal;
/* Graphene functions */
int get_norm_path (const char * path, char * buf, int offset, int size);
int get_base_name (const char * path, char * buf, int size);
/* Loading configs / manifests */
#include
struct config;
DEFINE_LISTP(config);
struct config_store {
LISTP_TYPE(config) root;
LISTP_TYPE(config) entries;
void * raw_data;
int raw_size;
void * (*malloc) (size_t);
void (*free) (void *);
};
int read_config (struct config_store * store, int (*filter) (const char *, int),
const char ** errstring);
int free_config (struct config_store * store);
int copy_config (struct config_store * store, struct config_store * new_store);
int write_config (void * file, int (*write) (void *, void *, int),
struct config_store * store);
ssize_t get_config (struct config_store * cfg, const char * key,
char * val_buf, size_t buf_size);
int get_config_entries (struct config_store * cfg, const char * key,
char * key_buf, size_t key_bufsize);
ssize_t get_config_entries_size (struct config_store * cfg, const char * key);
int set_config (struct config_store * cfg, const char * key, const char * val);
#define CONFIG_MAX 4096
#endif /* API_H */