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| author | Mattias Andrée <m@maandree.se> | 2026-05-11 23:15:33 +0200 |
|---|---|---|
| committer | Mattias Andrée <m@maandree.se> | 2026-05-11 23:15:33 +0200 |
| commit | 86087e5f9cf4a0512ba36b4d01086b905574a47d (patch) | |
| tree | 03ce90743ef4d9e3da6ba45b70f11494e12b667c /libtest/mmap.c | |
| parent | Misc (diff) | |
| download | librecrypt-86087e5f9cf4a0512ba36b4d01086b905574a47d.tar.gz librecrypt-86087e5f9cf4a0512ba36b4d01086b905574a47d.tar.bz2 librecrypt-86087e5f9cf4a0512ba36b4d01086b905574a47d.tar.xz | |
Misc
Signed-off-by: Mattias Andrée <m@maandree.se>
Diffstat (limited to '')
| -rw-r--r-- | libtest/mmap.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/libtest/mmap.c b/libtest/mmap.c index d8a2a60..62ef06e 100644 --- a/libtest/mmap.c +++ b/libtest/mmap.c @@ -2,33 +2,38 @@ #include "common.h" #ifndef TEST -#include <sys/syscall.h> - - #if !defined(__linux__) # errno "Don't know how to implement mmap(3), mumap(3), and mremap(3)" #endif +#ifdef SYS_mmap2 +# define IF_MMAP2(A) (A) +#else +# define IF_MMAP2(A) ((void)0) +#endif + +#if defined(__x86_64__) && defined(__ILP32__) /* x32 */ +# define SYSCALL_ARG_MAX LLONG_MAX +#else +# define SYSCALL_ARG_MAX LONG_MAX +#endif + + void * libtest_real_mmap(void *addr, size_t len, int prot, int flags, int fd, off_t off) { size_t pagesize = libtest_get_pagesize(); + IF_MMAP2(assert(pagesize == 4096u)); if (off < 0 || off % (off_t)pagesize) goto einval; - off /= (off_t)pagesize; + IF_MMAP2(off /= (off_t)pagesize); -#if defined(__x86_64__) && defined(__ILP32__) /* x32 */ - if (off > LLONG_MAX) + if (off > SYSCALL_ARG_MAX) goto einval; -#else - if (off > LONG_MAX) - goto einval; -#endif #ifdef SYS_mmap2 - assert(pagesize == 4096u); return (void *)syscall(SYS_mmap2, addr, len, prot, flags, fd, off); #else return (void *)syscall(SYS_mmap, addr, len, prot, flags, fd, off); |