diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Makefile.OSX | 2 | ||||
| -rw-r--r-- | src/libfaketime.c | 138 |
2 files changed, 139 insertions, 1 deletions
diff --git a/src/Makefile.OSX b/src/Makefile.OSX index 3150f46..ee9efde 100644 --- a/src/Makefile.OSX +++ b/src/Makefile.OSX @@ -38,7 +38,7 @@ INSTALL ?= install PREFIX ?= /usr/local -CFLAGS += -DFAKE_SLEEP -DFAKE_INTERNAL_CALLS -DPREFIX='"'${PREFIX}'"' $(FAKETIME_COMPILE_CFLAGS) +CFLAGS += -DFAKE_SLEEP -DFAKE_INTERNAL_CALLS -DPREFIX='"'${PREFIX}'"' $(FAKETIME_COMPILE_CFLAGS) -DMACOS_DYLD_INTERPOSE LIB_LDFLAGS += -dynamiclib -current_version 0.9.9 -compatibility_version 0.7 SONAME = 1 diff --git a/src/libfaketime.c b/src/libfaketime.c index 4ce88ca..0fb7839 100644 --- a/src/libfaketime.c +++ b/src/libfaketime.c @@ -34,6 +34,9 @@ #include <sys/epoll.h> #endif #include <time.h> +#ifdef MACOS_DYLD_INTERPOSE +#include <sys/time.h> +#endif #include <math.h> #include <errno.h> #include <string.h> @@ -118,6 +121,14 @@ typedef int clockid_t; #include <mach/clock.h> #include <mach/mach.h> #endif + +#ifdef MACOS_DYLD_INTERPOSE +void do_macos_dyld_interpose(void); +#define DYLD_INTERPOSE(_new,_target) \ + __attribute__((used)) static struct{ const void* new; const void* target; } _interpose_##_target \ + __attribute__ ((section ("__DATA,__interpose"))) = { (const void*)(unsigned long)&_new, (const void*)(unsigned long)&_target }; +#endif + #endif /* some systems lack raw clock */ @@ -1312,7 +1323,11 @@ int futimens(int fd, const struct timespec times[2]) /* * Faked nanosleep() */ +#ifdef MACOS_DYLD_INTERPOSE +int macos_nanosleep(const struct timespec *req, struct timespec *rem) +#else int nanosleep(const struct timespec *req, struct timespec *rem) +#endif { int result; struct timespec real_req; @@ -1341,7 +1356,11 @@ int nanosleep(const struct timespec *req, struct timespec *rem) return -1; } +#ifdef MACOS_DYLD_INTERPOSE + DONT_FAKE_TIME(result = (*nanosleep)(&real_req, rem)); +#else DONT_FAKE_TIME(result = (*real_nanosleep)(&real_req, rem)); +#endif if (result == -1) { return result; @@ -1441,7 +1460,11 @@ int clock_nanosleep(clockid_t clock_id, int flags, const struct timespec *req, s /* * Faked usleep() */ +#ifdef MACOS_DYLD_INTERPOSE +int macos_usleep(useconds_t usec) +#else int usleep(useconds_t usec) +#endif { int result; @@ -1460,18 +1483,30 @@ int usleep(useconds_t usec) { return -1; } +#ifdef MACOS_DYLD_INTERPOSE + DONT_FAKE_TIME(result = (*usleep)((1.0 / user_rate) * usec)); +#else DONT_FAKE_TIME(result = (*real_usleep)((1.0 / user_rate) * usec)); +#endif return result; } real_req.tv_sec = usec / 1000000; real_req.tv_nsec = (usec % 1000000) * 1000; timespecmul(&real_req, 1.0 / user_rate, &real_req); +#ifdef MACOS_DYLD_INTERPOSE + DONT_FAKE_TIME(result = (*nanosleep)(&real_req, NULL)); +#else DONT_FAKE_TIME(result = (*real_nanosleep)(&real_req, NULL)); +#endif } else { +#ifdef MACOS_DYLD_INTERPOSE + DONT_FAKE_TIME(result = (*usleep)(usec)); +#else DONT_FAKE_TIME(result = (*real_usleep)(usec)); +#endif } return result; } @@ -1479,7 +1514,11 @@ int usleep(useconds_t usec) /* * Faked sleep() */ +#ifdef MACOS_DYLD_INTERPOSE +unsigned int macos_sleep(unsigned int seconds) +#else unsigned int sleep(unsigned int seconds) +#endif { if (!initialized) { @@ -1495,7 +1534,11 @@ unsigned int sleep(unsigned int seconds) { return 0; } +#ifdef MACOS_DYLD_INTERPOSE + DONT_FAKE_TIME(ret = (*sleep)((1.0 / user_rate) * seconds)); +#else DONT_FAKE_TIME(ret = (*real_sleep)((1.0 / user_rate) * seconds)); +#endif return (user_rate_set && !dont_fake)?(user_rate * ret):ret; } else @@ -1503,7 +1546,11 @@ unsigned int sleep(unsigned int seconds) int result; struct timespec real_req = {seconds, 0}, rem; timespecmul(&real_req, 1.0 / user_rate, &real_req); +#ifdef MACOS_DYLD_INTERPOSE + DONT_FAKE_TIME(result = (*nanosleep)(&real_req, &rem)); +#else DONT_FAKE_TIME(result = (*real_nanosleep)(&real_req, &rem)); +#endif if (result == -1) { return 0; @@ -1522,7 +1569,11 @@ unsigned int sleep(unsigned int seconds) { /* no need to fake anything */ unsigned int ret; +#ifdef MACOS_DYLD_INTERPOSE + DONT_FAKE_TIME(ret = (*sleep)(seconds)); +#else DONT_FAKE_TIME(ret = (*real_sleep)(seconds)); +#endif return ret; } } @@ -1532,7 +1583,11 @@ unsigned int sleep(unsigned int seconds) * @note due to rounding alarm(2) with faketime -f '+0 x7' won't wait 2/7 * wall clock seconds but 0 seconds */ +#ifdef MACOS_DYLD_INTERPOSE +unsigned int macos_alarm(unsigned int seconds) +#else unsigned int alarm(unsigned int seconds) +#endif { unsigned int ret; unsigned int seconds_real = (user_rate_set && !dont_fake)?((1.0 / user_rate) * seconds):seconds; @@ -1546,7 +1601,11 @@ unsigned int alarm(unsigned int seconds) return -1; } +#ifdef MACOS_DYLD_INTERPOSE + DONT_FAKE_TIME(ret = (*alarm)(seconds_real)); +#else DONT_FAKE_TIME(ret = (*real_alarm)(seconds_real)); +#endif return (user_rate_set && !dont_fake)?(user_rate * ret):ret; } @@ -1648,7 +1707,11 @@ int epoll_pwait(int epfd, struct epoll_event *events, int maxevents, int timeout /* * Faked poll() */ +#ifdef MACOS_DYLD_INTERPOSE +int macos_poll(struct pollfd *fds, nfds_t nfds, int timeout) +#else int poll(struct pollfd *fds, nfds_t nfds, int timeout) +#endif { int ret, timeout_real = (user_rate_set && !dont_fake && (timeout > 0))?(timeout / user_rate):timeout; @@ -1661,17 +1724,28 @@ int poll(struct pollfd *fds, nfds_t nfds, int timeout) return -1; } +#ifdef MACOS_DYLD_INTERPOSE + DONT_FAKE_TIME(ret = (*poll)(fds, nfds, timeout_real)); +#else DONT_FAKE_TIME(ret = (*real_poll)(fds, nfds, timeout_real)); +#endif return ret; } /* * Faked select() */ +#ifdef MACOS_DYLD_INTERPOSE +int macos_select(int nfds, fd_set *readfds, + fd_set *writefds, + fd_set *errorfds, + struct timeval *timeout) +#else int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *errorfds, struct timeval *timeout) +#endif { int ret; struct timeval timeout_real; @@ -1707,7 +1781,11 @@ int select(int nfds, fd_set *readfds, } } +#ifdef MACOS_DYLD_INTERPOSE + DONT_FAKE_TIME(ret = (*select)(nfds, readfds, writefds, errorfds, timeout == NULL ? timeout : &timeout_real)); +#else DONT_FAKE_TIME(ret = (*real_select)(nfds, readfds, writefds, errorfds, timeout == NULL ? timeout : &timeout_real)); +#endif return ret; } @@ -2134,7 +2212,11 @@ int timerfd_gettime(int fd, struct itimerspec *curr_value) * time() implementation using clock_gettime() * @note Does not check for EFAULT, see man 2 time */ +#ifdef MACOS_DYLD_INTERPOSE +time_t macos_time(time_t *time_tptr) +#else time_t time(time_t *time_tptr) +#endif { struct timespec tp; time_t result; @@ -2143,7 +2225,11 @@ time_t time(time_t *time_tptr) { ftpl_init(); } +#ifdef MACOS_DYLD_INTERPOSE + DONT_FAKE_TIME(result = (*clock_gettime)(CLOCK_REALTIME, &tp)); +#else DONT_FAKE_TIME(result = (*real_clock_gettime)(CLOCK_REALTIME, &tp)); +#endif if (result == -1) return -1; /* pass the real current time to our faking version, overwriting it */ @@ -2156,7 +2242,11 @@ time_t time(time_t *time_tptr) return tp.tv_sec; } +#ifdef MACOS_DYLD_INTERPOSE +int macos_ftime(struct timeb *tb) +#else int ftime(struct timeb *tb) +#endif { struct timespec tp; int result; @@ -2179,7 +2269,11 @@ int ftime(struct timeb *tb) } /* initialize our TZ result with the real current time */ +#ifdef MACOS_DYLD_INTERPOSE + DONT_FAKE_TIME(result = (*ftime)(tb)); +#else DONT_FAKE_TIME(result = (*real_ftime)(tb)); +#endif if (result == -1) { return result; @@ -2198,7 +2292,11 @@ int ftime(struct timeb *tb) return result; /* will always be 0 (see manpage) */ } +#ifdef MACOS_DYLD_INTERPOSE +int macos_gettimeofday(struct timeval *tv, void *tz) +#else int gettimeofday(struct timeval *tv, void *tz) +#endif { int result; @@ -2222,7 +2320,11 @@ int gettimeofday(struct timeval *tv, void *tz) } /* initialize our result with the real current time */ +#ifdef MACOS_DYLD_INTERPOSE + DONT_FAKE_TIME(result = (*gettimeofday)(tv, tz)); +#else DONT_FAKE_TIME(result = (*real_gettimeofday)(tv, tz)); +#endif if (result == -1) return result; /* original function failed */ /* pass the real current time to our faking version, overwriting it */ @@ -2232,7 +2334,11 @@ int gettimeofday(struct timeval *tv, void *tz) return result; } +#ifdef MACOS_DYLD_INTERPOSE +int macos_clock_gettime(clockid_t clk_id, struct timespec *tp) +#else int clock_gettime(clockid_t clk_id, struct timespec *tp) +#endif { int result; static int recursion_depth = 0; @@ -2277,7 +2383,11 @@ int clock_gettime(clockid_t clk_id, struct timespec *tp) } /* initialize our result with the real current time */ +#ifdef MACOS_DYLD_INTERPOSE + DONT_FAKE_TIME(result = (*clock_gettime)(clk_id, tp)); +#else DONT_FAKE_TIME(result = (*real_clock_gettime)(clk_id, tp)); +#endif if (result == -1) return result; /* original function failed */ /* pass the real current time to our faking version, overwriting it */ @@ -2298,7 +2408,11 @@ int clock_gettime(clockid_t clk_id, struct timespec *tp) } +#ifdef MACOS_DYLD_INTERPOSE +int macos_timespec_get(struct timespec *ts, int base) +#else int timespec_get(struct timespec *ts, int base) +#endif { int result; @@ -2321,7 +2435,11 @@ int timespec_get(struct timespec *ts, int base) } /* initialize our result with the real current time */ +#ifdef MACOS_DYLD_INTERPOSE + DONT_FAKE_TIME(result = (*timespec_get)(ts, base)); +#else DONT_FAKE_TIME(result = (*real_timespec_get)(ts, base)); +#endif if (result == 0) return result; /* original function failed */ /* pass the real current time to our faking version, overwriting it */ @@ -2653,6 +2771,10 @@ static void ftpl_init(void) #endif #endif +#ifdef MACOS_DYLD_INTERPOSE + do_macos_dyld_interpose(); +#endif + initialized = 1; #ifdef FAKE_STATELESS @@ -3902,6 +4024,22 @@ long syscall(long number, ...) { } #endif +#ifdef MACOS_DYLD_INTERPOSE +void do_macos_dyld_interpose(void) { + DYLD_INTERPOSE(macos_alarm, alarm); + DYLD_INTERPOSE(macos_clock_gettime, clock_gettime); + DYLD_INTERPOSE(macos_gettimeofday, gettimeofday); + DYLD_INTERPOSE(macos_time, time); + DYLD_INTERPOSE(macos_ftime, ftime); + DYLD_INTERPOSE(macos_sleep, sleep); + DYLD_INTERPOSE(macos_usleep, usleep); + DYLD_INTERPOSE(macos_nanosleep, nanosleep); + DYLD_INTERPOSE(macos_poll, poll); + DYLD_INTERPOSE(macos_select, select); + DYLD_INTERPOSE(macos_timespec_get, timespec_get); +} +#endif + /* * Editor modelines * |