10 #include <ccan/tap/tap.h>
11 #include <ccan/altstack/altstack.h>
22 int fail, call1, call2;
25 #define e(x) (900+(x))
26 #define seterr(x) (errno = e(x))
27 #define setcall(x) ((call1 |= !errno ? (x) : 0), (call2 |= errno || state.out ? (x) : 0))
28 #define getrlimit(...) (fail&getrlimit_ ? (seterr(getrlimit_), -1) : (setcall(getrlimit_), getrlimit(__VA_ARGS__)))
29 #define mmap(...) (fail&mmap_ ? (seterr(mmap_), (void *)-1) : (setcall(mmap_), mmap(__VA_ARGS__)))
30 #define munmap(a, b) (fail&munmap_ ? (seterr(munmap_), -1) : (setcall(munmap_), munmap(m_=(a), msz_=(b))))
31 #define setrlimit(...) (fail&setrlimit_ ? (seterr(setrlimit_), -1) : (setcall(setrlimit_), setrlimit(__VA_ARGS__)))
32 #define sigaltstack(...) (fail&sigaltstack_ ? (seterr(sigaltstack_), -1) : (setcall(sigaltstack_), sigaltstack(__VA_ARGS__)))
33 #define sigaction(...) (fail&sigaction_ ? (seterr(sigaction_), -1) : (setcall(sigaction_), sigaction(__VA_ARGS__)))
42 #define stderr mystderr
44 #include <ccan/altstack/altstack.c>
49 static void __attribute__((optimize("O0"))) dn(unsigned long i)
51 if (used) used = altstack_used();
54 static void *wrap(void *i)
56 dn((unsigned long) i);
60 #define chkfail(x, y, z, c1, c2) \
65 ok1((fail = x) && (y)); \
71 #define chkok(y, z, c1, c2) \
85 long pgsz = sysconf(_SC_PAGESIZE);
89 chkfail(getrlimit_, altstack(8*MiB, wrap, 0, 0) == -1, e(getrlimit_),
93 chkfail(setrlimit_, altstack(8*MiB, wrap, 0, 0) == -1, e(setrlimit_),
97 chkfail(mmap_, altstack(8*MiB, wrap, 0, 0) == -1, e(mmap_),
98 getrlimit_|setrlimit_,
101 chkfail(sigaltstack_, altstack(8*MiB, wrap, 0, 0) == -1, e(sigaltstack_),
102 getrlimit_|setrlimit_|mmap_,
105 chkfail(sigaction_, altstack(8*MiB, wrap, 0, 0) == -1, e(sigaction_),
106 getrlimit_|setrlimit_|mmap_|sigaltstack_,
107 setrlimit_|munmap_|sigaltstack_);
109 chkfail(munmap_, altstack(8*MiB, wrap, 0, 0) == 1, e(munmap_),
110 getrlimit_|setrlimit_|mmap_|sigaltstack_|sigaction_,
111 setrlimit_|sigaltstack_|sigaction_);
112 if (fail = 0, munmap(m_, msz_) == -1)
115 chkok( altstack(1*MiB, wrap, (void *) 1000000, 0) == -1, EOVERFLOW,
116 getrlimit_|setrlimit_|mmap_|sigaltstack_|sigaction_,
117 setrlimit_|munmap_|sigaltstack_|sigaction_);
119 // be sure segv catch is repeatable (SA_NODEFER)
120 chkok( altstack(1*MiB, wrap, (void *) 1000000, 0) == -1, EOVERFLOW,
121 getrlimit_|setrlimit_|mmap_|sigaltstack_|sigaction_,
122 setrlimit_|munmap_|sigaltstack_|sigaction_);
125 chkfail(munmap_, altstack(1*MiB, wrap, (void *) 1000000, 0) == -1, EOVERFLOW,
126 getrlimit_|setrlimit_|mmap_|sigaltstack_|sigaction_,
127 setrlimit_|sigaltstack_|sigaction_);
128 if (fail = 0, munmap(m_, msz_) == -1)
131 ok1(altstack_max() == 1*MiB);
132 diag("used: %lu", used);
133 ok1(used >= 1*MiB - pgsz && used <= 1*MiB + pgsz);
136 for(p = altstack_geterr(); *p; p++)
137 if (*p >= '0' && *p <= '9')
140 #define estr "(altstack@~~~) SIGSEGV caught; (altstack@~~~) munmap(m, max): Unknown error ~~~"
141 ok1(strcmp(altstack_geterr(), estr) == 0);
143 char buf[ALTSTACK_ERR_MAXLEN*2] = {0};
144 if ((mystderr = fmemopen(buf, sizeof(buf), "w")) == NULL)
149 ok1(strcmp(buf, estr "\n") == 0);
152 chkok( altstack(8*MiB, wrap, (void *) 1000000, 0) == -1, EOVERFLOW,
153 getrlimit_|setrlimit_|mmap_|sigaltstack_|sigaction_,
154 setrlimit_|munmap_|sigaltstack_|sigaction_);
156 diag("used: %lu", used);
157 ok1(used >= 8*MiB - pgsz && used <= 8*MiB + pgsz);
160 chkok( altstack(8*MiB, wrap, (void *) 100000, 0) == 0, 0,
161 getrlimit_|setrlimit_|mmap_|sigaltstack_|sigaction_|munmap_,
162 setrlimit_|munmap_|sigaltstack_|sigaction_);
167 diag("used: %lu", used);
168 ok1(used == 32 || used == 40);
170 return exit_status();