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Andrew Cooper
e1b7eb92d3
xen-tools/libs.h currently contains a shared BUILD_BUG_ON() implementation and is used by some tools. Extend this to include ARRAY_SIZE and clean up all the opencoding. Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Jan Beulich <jbeulich@suse.com>
62 lines
1.1 KiB
C
62 lines
1.1 KiB
C
#ifndef _UTILS_H
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#define _UTILS_H
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#include <stdbool.h>
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#include <string.h>
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#include <stdint.h>
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#include <xen-tools/libs.h>
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/* Is A == B ? */
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#define streq(a,b) (strcmp((a),(b)) == 0)
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/* Does A start with B ? */
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#define strstarts(a,b) (strncmp((a),(b),strlen(b)) == 0)
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/* Does A end in B ? */
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static inline bool strends(const char *a, const char *b)
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{
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if (strlen(a) < strlen(b))
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return false;
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return streq(a + strlen(a) - strlen(b), b);
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}
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void barf(const char *fmt, ...) __attribute__((noreturn));
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void barf_perror(const char *fmt, ...) __attribute__((noreturn));
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void (*xprintf)(const char *fmt, ...);
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#define eprintf(_fmt, _args...) xprintf("[ERR] %s" _fmt, __FUNCTION__, ##_args)
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/*
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* Mux errno values onto returned pointers.
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*/
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static inline void *ERR_PTR(long error)
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{
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return (void *)error;
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}
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static inline long PTR_ERR(const void *ptr)
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{
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return (long)ptr;
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}
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static inline long IS_ERR(const void *ptr)
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{
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return ((unsigned long)ptr > (unsigned long)-1000L);
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}
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#endif /* _UTILS_H */
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/*
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* Local variables:
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* c-file-style: "linux"
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* indent-tabs-mode: t
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* c-indent-level: 8
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* c-basic-offset: 8
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* tab-width: 8
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* End:
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*/
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