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#ifndef _UTILS_H
#define _UTILS_H
#include <stdbool.h>
#include <string.h>
#include <stdint.h>
#include <stdio.h>
#include <xen-tools/common-macros.h>
#include "xenstore_lib.h"
/* Header of the node record in tdb. */
struct xs_tdb_record_hdr {
uint64_t generation;
uint32_t num_perms;
uint32_t datalen;
uint32_t childlen;
struct xs_permissions perms[0];
};
/* Is A == B ? */
#define streq(a,b) (strcmp((a),(b)) == 0)
/* Does A start with B ? */
#define strstarts(a,b) (strncmp((a),(b),strlen(b)) == 0)
/* Does A end in B ? */
static inline bool strends(const char *a, const char *b)
{
if (strlen(a) < strlen(b))
return false;
return streq(a + strlen(a) - strlen(b), b);
}
/*
* Write NUL bytes for aligning state data to 8 bytes.
*/
const char *dump_state_align(FILE *fp);
#define PRINTF_ATTRIBUTE(a1, a2) __attribute__((format (printf, a1, a2)))
#define __noreturn __attribute__((noreturn))
void barf(const char *fmt, ...) __noreturn PRINTF_ATTRIBUTE(1, 2);
void barf_perror(const char *fmt, ...) __noreturn PRINTF_ATTRIBUTE(1, 2);
/* Function pointer as xprintf() can be configured at runtime. */
extern void (*xprintf)(const char *fmt, ...) PRINTF_ATTRIBUTE(1, 2);
#define eprintf(_fmt, _args...) xprintf("[ERR] %s" _fmt, __FUNCTION__, ##_args)
/*
* Mux errno values onto returned pointers.
*/
static inline void *ERR_PTR(long error)
{
return (void *)error;
}
static inline long PTR_ERR(const void *ptr)
{
return (long)ptr;
}
static inline long IS_ERR(const void *ptr)
{
return ((unsigned long)ptr > (unsigned long)-1000L);
}
#endif /* _UTILS_H */
/*
* Local variables:
* mode: C
* c-file-style: "linux"
* indent-tabs-mode: t
* c-basic-offset: 8
* tab-width: 8
* End:
*/
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