Fix decoding of statfs family syscalls
Fix decoders of fstatfs, fstatfs64, statfs, and statfs64 syscalls
by rewriting them using mpers infrastructure.
* fetch_struct_statfs.c: New file.
* fstatfs.c: Likewise.
* fstatfs64.c: Likewise.
* print_statfs.c: Likewise.
* statfs.h: Likewise.
* statfs64.c: Likewise.
* statfs.c: Remove everything except SYS_FUNC(statfs).
* configure.ac: Remove the check for struct statfs64 in <sys/vfs.h>.
Add checks for struct statfs and struct statfs64 in <asm/statfs.h>.
Add checks for f_frsize and f_flags members of these structures.
* defs.h (struct strace_statfs): New forward declaration.
(print_struct_statfs, print_struct_statfs64): New prototypes.
* Makefile.am (libstrace_a_SOURCES): Add fstatfs.c, fstatfs64.c,
statfs.c, and statfs64.c.
(strace_SOURCES): Add fetch_struct_statfs.c, print_statfs.c,
and statfs.h.
* NEWS: Mention this fix.
* tests/fstatfs.c: New file.
* tests/fstatfs64.c: Likewise.
* tests/statfs64.c: Likewise.
* tests/xstatfs.c: Likewise.
* tests/xstatfs64.c: Likewise.
* tests/xstatfsx.c: Likewise.
* tests/fstatfs.test: New test.
* tests/fstatfs64.test: Likewise.
* tests/statfs64.test: Likewise.
* tests/statfs.c: Rewrite using xstatfs.c.
* tests/statfs.test: Update.
* tests/.gitignore: Add fstatfs, fstatfs64, and statfs64.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add fstatfs.test, fstatfs64.test, and statfs64.test.
(EXTRA_DIST): Add xstatfs.c, xstatfs64.c, and xstatfsx.c.
diff --git a/defs.h b/defs.h
index e345fd9..ef579eb 100644
--- a/defs.h
+++ b/defs.h
@@ -634,6 +634,10 @@
extern const char *sprint_open_modes(int);
extern void print_seccomp_filter(struct tcb *tcp, unsigned long);
+struct strace_statfs;
+extern void print_struct_statfs(struct tcb *tcp, long);
+extern void print_struct_statfs64(struct tcb *tcp, long, unsigned long);
+
extern int block_ioctl(struct tcb *, const unsigned int, long);
extern int evdev_ioctl(struct tcb *, const unsigned int, long);
extern int loop_ioctl(struct tcb *, const unsigned int, long);