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libfaketime.c: wrap timespec_get in TIME_UTC macro

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Function `timespec_get` is not guaranteed to be declared in MacOS
since its standard library is non-conformance to modern standards.
Therefore, skip patching `timespec_get` if it is undeclared by the
standard library.

The detection of `timespec_get` is based on the conjecture that the
macro `TIME_UTC` is only defined when `timespec_get` is declared.
This commit is contained in:
Samuel Tam
2022-12-20 00:35:53 +08:00
committed by usertam
parent df8a045597
commit e0e6b79568
1 changed files with 8 additions and 0 deletions
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8
src/libfaketime.c
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@@ -196,7 +196,9 @@ static time_t (*real_time) (time_t *);
static int (*real_ftime) (struct timeb *);
static int (*real_gettimeofday) (struct timeval *, void *);
static int (*real_clock_gettime) (clockid_t clk_id, struct timespec *tp);
#ifdef TIME_UTC
static int (*real_timespec_get) (struct timespec *ts, int base);
#endif
#ifdef FAKE_INTERNAL_CALLS
static int (*real___ftime) (struct timeb *);
static int (*real___gettimeofday) (struct timeval *, void *);
@@ -2441,6 +2443,7 @@ int clock_gettime(clockid_t clk_id, struct timespec *tp)
}
#ifdef TIME_UTC
#ifdef MACOS_DYLD_INTERPOSE
int macos_timespec_get(struct timespec *ts, int base)
#else
@@ -2475,6 +2478,7 @@ int timespec_get(struct timespec *ts, int base)
/* return the result to the caller */
return result;
}
#endif
/*
@@ -2681,7 +2685,9 @@ static void ftpl_init(void)
real_lxstat64 = dlsym(RTLD_NEXT, "__lxstat64");
real_time = dlsym(RTLD_NEXT, "time");
real_ftime = dlsym(RTLD_NEXT, "ftime");
#ifdef TIME_UTC
real_timespec_get = dlsym(RTLD_NEXT, "timespec_get");
#endif
#ifdef FAKE_FILE_TIMESTAMPS
real_utimes = dlsym(RTLD_NEXT, "utimes");
real_utime = dlsym(RTLD_NEXT, "utime");
@@ -4163,7 +4169,9 @@ void do_macos_dyld_interpose(void) {
DYLD_INTERPOSE(macos_nanosleep, nanosleep);
DYLD_INTERPOSE(macos_poll, poll);
#endif
#ifdef TIME_UTC
DYLD_INTERPOSE(macos_timespec_get, timespec_get);
#endif
DYLD_INTERPOSE(macos_select, select);
#ifdef FAKE_RANDOM
DYLD_INTERPOSE(macos_getentropy, getentropy);