Teach kdump to decode linux syscalls names too.
Fix bug introduced in my previous commit: the kernel always dump native signal numbers, so no need to check the ABI in ktrpsig(). Suggested by: jhb MFC after: 1 Month.
This commit is contained in:
Dmitry Chagin
parent
141aca1ff0
commit
dde5f9b938
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=219138
@ -1,15 +1,23 @@
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# @(#)Makefile 8.1 (Berkeley) 6/6/93
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# $FreeBSD$
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.if (${MACHINE_ARCH} == "amd64")
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SFX= 32
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.endif
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.PATH: ${.CURDIR}/../ktrace
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PROG= kdump
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SRCS= kdump.c ioctl.c kdump_subr.c subr.c
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CFLAGS+= -I${.CURDIR}/../ktrace -I${.CURDIR} -I${.CURDIR}/../..
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.if ${MACHINE_ARCH} == "amd64" || ${MACHINE_ARCH} == "i386"
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SRCS+= linux_syscalls.c
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.endif
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WARNS?= 0
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CLEANFILES= ioctl.c kdump_subr.c
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CLEANFILES= ioctl.c kdump_subr.c linux_syscalls.c
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ioctl.c: mkioctls
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sh ${.CURDIR}/mkioctls ${DESTDIR}/usr/include > ${.TARGET}
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@ -17,4 +25,10 @@ ioctl.c: mkioctls
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kdump_subr.c: mksubr
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sh ${.CURDIR}/mksubr ${DESTDIR}/usr/include > ${.TARGET}
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linux_syscalls.c:
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/bin/sh ${.CURDIR}/../../sys/kern/makesyscalls.sh \
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${.CURDIR}/../../sys/${MACHINE_ARCH}/linux${SFX}/syscalls.master ${.CURDIR}/linux_syscalls.conf
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echo "int nlinux_syscalls = sizeof(linux_syscallnames) / sizeof(linux_syscallnames[0]);" \
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>> linux_syscalls.c
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.include <bsd.prog.mk>
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@ -93,7 +93,7 @@ void ktrnamei(char *, int);
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void hexdump(char *, int, int);
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void visdump(char *, int, int);
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void ktrgenio(struct ktr_genio *, int);
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void ktrpsig(struct ktr_psig *, u_int);
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void ktrpsig(struct ktr_psig *);
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void ktrcsw(struct ktr_csw *);
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void ktruser(int, unsigned char *);
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void ktrsockaddr(struct sockaddr *);
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@ -111,6 +111,41 @@ struct ktr_header ktr_header;
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#define TIME_FORMAT "%b %e %T %Y"
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#define eqs(s1, s2) (strcmp((s1), (s2)) == 0)
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#define print_number(i,n,c) do { \
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if (decimal) \
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printf("%c%ld", c, (long)*i); \
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else \
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printf("%c%#lx", c, (long)*i); \
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i++; \
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n--; \
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c = ','; \
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} while (0);
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#if defined(__amd64__) || defined(__i386__)
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void linux_ktrsyscall(struct ktr_syscall *);
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void linux_ktrsysret(struct ktr_sysret *);
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extern char *linux_syscallnames[];
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extern int nlinux_syscalls;
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/*
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* from linux.h
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* Linux syscalls return negative errno's, we do positive and map them
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*/
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static int bsd_to_linux_errno[ELAST + 1] = {
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-0, -1, -2, -3, -4, -5, -6, -7, -8, -9,
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-10, -35, -12, -13, -14, -15, -16, -17, -18, -19,
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-20, -21, -22, -23, -24, -25, -26, -27, -28, -29,
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-30, -31, -32, -33, -34, -11,-115,-114, -88, -89,
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-90, -91, -92, -93, -94, -95, -96, -97, -98, -99,
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-100,-101,-102,-103,-104,-105,-106,-107,-108,-109,
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-110,-111, -40, -36,-112,-113, -39, -11, -87,-122,
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-116, -66, -6, -6, -6, -6, -6, -37, -38, -9,
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-6, -6, -43, -42, -75,-125, -84, -95, -16, -74,
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-72, -67, -71
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};
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#endif
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struct proc_info
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{
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TAILQ_ENTRY(proc_info) info;
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@ -233,10 +268,20 @@ main(int argc, char *argv[])
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drop_logged = 0;
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switch (ktr_header.ktr_type) {
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case KTR_SYSCALL:
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ktrsyscall((struct ktr_syscall *)m, sv_flags);
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#if defined(__amd64__) || defined(__i386__)
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if ((sv_flags & SV_ABI_MASK) == SV_ABI_LINUX)
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linux_ktrsyscall((struct ktr_syscall *)m);
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else
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#endif
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ktrsyscall((struct ktr_syscall *)m, sv_flags);
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break;
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case KTR_SYSRET:
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ktrsysret((struct ktr_sysret *)m, sv_flags);
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#if defined(__amd64__) || defined(__i386__)
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if ((sv_flags & SV_ABI_MASK) == SV_ABI_LINUX)
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linux_ktrsysret((struct ktr_sysret *)m);
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else
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#endif
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ktrsysret((struct ktr_sysret *)m, sv_flags);
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break;
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case KTR_NAMEI:
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case KTR_SYSCTL:
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@ -246,7 +291,7 @@ main(int argc, char *argv[])
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ktrgenio((struct ktr_genio *)m, ktrlen);
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break;
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case KTR_PSIG:
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ktrpsig((struct ktr_psig *)m, sv_flags);
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ktrpsig((struct ktr_psig *)m);
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break;
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case KTR_CSW:
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ktrcsw((struct ktr_csw *)m);
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@ -455,17 +500,6 @@ ktrsyscall(struct ktr_syscall *ktr, u_int flags)
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char c = '(';
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if (fancy &&
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(flags == 0 || (flags & SV_ABI_MASK) == SV_ABI_FREEBSD)) {
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#define print_number(i,n,c) do { \
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if (decimal) \
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(void)printf("%c%ld", c, (long)*i); \
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else \
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(void)printf("%c%#lx", c, (long)*i); \
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i++; \
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n--; \
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c = ','; \
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} while (0);
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if (ktr->ktr_code == SYS_ioctl) {
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const char *cp;
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print_number(ip,narg,c);
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@ -1093,10 +1127,9 @@ const char *signames[] = {
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};
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void
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ktrpsig(struct ktr_psig *psig, u_int flags)
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ktrpsig(struct ktr_psig *psig)
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{
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if ((flags & SV_ABI_MASK) == SV_ABI_FREEBSD &&
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psig->signo > 0 && psig->signo < NSIG)
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if (psig->signo > 0 && psig->signo < NSIG)
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(void)printf("SIG%s ", signames[psig->signo]);
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else
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(void)printf("SIG %d ", psig->signo);
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@ -1471,6 +1504,67 @@ ktrstruct(char *buf, size_t buflen)
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printf("invalid record\n");
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}
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#if defined(__amd64__) || defined(__i386__)
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void
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linux_ktrsyscall(struct ktr_syscall *ktr)
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{
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int narg = ktr->ktr_narg;
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register_t *ip;
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if (ktr->ktr_code >= nlinux_syscalls || ktr->ktr_code < 0)
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printf("[%d]", ktr->ktr_code);
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else
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printf("%s", linux_syscallnames[ktr->ktr_code]);
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ip = &ktr->ktr_args[0];
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if (narg) {
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char c = '(';
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while (narg > 0)
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print_number(ip, narg, c);
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putchar(')');
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}
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putchar('\n');
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}
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void
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linux_ktrsysret(struct ktr_sysret *ktr)
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{
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register_t ret = ktr->ktr_retval;
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int error = ktr->ktr_error;
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int code = ktr->ktr_code;
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if (code >= nlinux_syscalls || code < 0)
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printf("[%d] ", code);
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else
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printf("%s ", linux_syscallnames[code]);
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if (error == 0) {
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if (fancy) {
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printf("%ld", (long)ret);
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if (ret < 0 || ret > 9)
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printf("/%#lx", (long)ret);
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} else {
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if (decimal)
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printf("%ld", (long)ret);
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else
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printf("%#lx", (long)ret);
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}
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} else if (error == ERESTART)
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printf("RESTART");
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else if (error == EJUSTRETURN)
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printf("JUSTRETURN");
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else {
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if (ktr->ktr_error <= ELAST + 1)
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error = abs(bsd_to_linux_errno[ktr->ktr_error]);
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else
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error = 999;
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printf("-1 errno %d", error);
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if (fancy)
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printf(" %s", strerror(ktr->ktr_error));
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}
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putchar('\n');
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}
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#endif
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void
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usage(void)
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{
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11
usr.bin/kdump/linux_syscalls.conf
Normal file
11
usr.bin/kdump/linux_syscalls.conf
Normal file
@ -0,0 +1,11 @@
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# $FreeBSD$
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sysnames="linux_syscalls.c"
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sysproto="/dev/null"
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sysproto_h=_LINUX_SYSPROTO_H_
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syshdr="/dev/null"
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syssw="/dev/null"
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sysmk="/dev/null"
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syscallprefix="LINUX_SYS_"
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switchname="/dev/null"
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namesname="linux_syscallnames"
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systrace="/dev/null"
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