kdump: Decode Linux l_sigset_t.
Reviewed by: markj Differential revision: https://reviews.freebsd.org/D35153 MFC after: 2 weeks
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@ -2056,6 +2056,9 @@ ktrstruct(char *buf, size_t buflen)
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ktrbitset(name, set, datalen);
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free(set);
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} else {
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#ifdef SYSDECODE_HAVE_LINUX
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if (ktrstruct_linux(name, data, datalen) == false)
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#endif
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printf("unknown structure\n");
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}
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return;
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@ -77,6 +77,7 @@ bool print_mask_arg_part(bool (*decoder)(FILE *, int, int *),
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int value, int *rem);
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#ifdef SYSDECODE_HAVE_LINUX
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bool ktrstruct_linux(const char *name, const char *data, size_t datalen);
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void ktrsyscall_linux(struct ktr_syscall *ktr, register_t **resip,
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int *resnarg, char *resc);
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#ifdef __amd64__
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@ -31,7 +31,11 @@ __FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/uio.h>
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#include <sys/ktrace.h>
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#include <err.h>
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#include <errno.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysdecode.h>
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#include "kdump.h"
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@ -45,6 +49,8 @@ __FBSDID("$FreeBSD$");
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#include <i386/linux/linux_syscall.h>
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#endif
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#include <compat/linux/linux.h>
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static void
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print_linux_signal(int signo)
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{
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@ -183,3 +189,41 @@ ktrsyscall_linux32(struct ktr_syscall *ktr, register_t **resip,
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*resnarg = narg;
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}
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#endif /* __amd64__ */
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static void
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ktrsigset(const char *name, const l_sigset_t *mask, size_t sz)
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{
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unsigned long i, c;
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printf("%s [ ", name);
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c = 0;
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for (i = 1; i <= sz * CHAR_BIT; i++) {
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if (!LINUX_SIGISMEMBER(*mask, i))
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continue;
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if (c != 0)
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printf(", ");
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printf("%s", sysdecode_linux_signal(i));
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c++;
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}
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if (c == 0)
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printf("empty ]\n");
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else
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printf(" ]\n");
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}
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bool
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ktrstruct_linux(const char *name, const char *data, size_t datalen)
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{
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l_sigset_t mask;
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if (strcmp(name, "l_sigset_t") == 0) {
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/* Old Linux sigset_t is one word size. */
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if (datalen < sizeof(int) || datalen > sizeof(l_sigset_t))
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return (false);
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memcpy(&mask, data, datalen);
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ktrsigset(name, &mask, datalen);
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} else
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return (false);
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return (true);
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}
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