Date: Wed, 25 Sep 2019 13:29:56 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r352683 - stable/12/usr.bin/truss Message-ID: <201909251329.x8PDTu6h016634@repo.freebsd.org>
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Author: kib Date: Wed Sep 25 13:29:56 2019 New Revision: 352683 URL: https://svnweb.freebsd.org/changeset/base/352683 Log: MFC r352488: truss: decode sysctl names. Modified: stable/12/usr.bin/truss/syscall.h stable/12/usr.bin/truss/syscalls.c Directory Properties: stable/12/ (props changed) Modified: stable/12/usr.bin/truss/syscall.h ============================================================================== --- stable/12/usr.bin/truss/syscall.h Wed Sep 25 13:28:06 2019 (r352682) +++ stable/12/usr.bin/truss/syscall.h Wed Sep 25 13:29:56 2019 (r352683) @@ -131,6 +131,7 @@ enum Argtype { Sockprotocol, Socktype, Sysarch, + Sysctl, Umtxop, Waitoptions, Whence, Modified: stable/12/usr.bin/truss/syscalls.c ============================================================================== --- stable/12/usr.bin/truss/syscalls.c Wed Sep 25 13:28:06 2019 (r352682) +++ stable/12/usr.bin/truss/syscalls.c Wed Sep 25 13:29:56 2019 (r352683) @@ -50,6 +50,7 @@ __FBSDID("$FreeBSD$"); #include <sys/socket.h> #define _WANT_FREEBSD11_STAT #include <sys/stat.h> +#include <sys/sysctl.h> #include <sys/time.h> #include <sys/un.h> #include <sys/wait.h> @@ -499,6 +500,12 @@ static struct syscall decoded_syscalls[] = { .args = { { Name, 0 }, { Atfd, 1 }, { Name, 2 } } }, { .name = "sysarch", .ret_type = 1, .nargs = 2, .args = { { Sysarch, 0 }, { Ptr, 1 } } }, + { .name = "__sysctl", .ret_type = 1, .nargs = 6, + .args = { { Sysctl, 0 }, { Sizet, 1 }, { Ptr, 2 }, { Ptr, 3 }, + { Ptr, 4 }, { Sizet, 5 } } }, + { .name = "__sysctlbyname", .ret_type = 1, .nargs = 6, + .args = { { Name, 0 }, { Sizet, 1 }, { Ptr, 2 }, { Ptr, 3 }, + { Ptr, 4}, { Sizet, 5 } } }, { .name = "thr_kill", .ret_type = 1, .nargs = 2, .args = { { Long, 0 }, { Signal, 1 } } }, { .name = "thr_self", .ret_type = 1, .nargs = 1, @@ -1544,6 +1551,15 @@ print_cmsgs(FILE *fp, pid_t pid, bool receive, struct free(cmsgbuf); } +static void +print_sysctl_oid(FILE *fp, int *oid, int len) +{ + int i; + + for (i = 0; i < len; i++) + fprintf(fp, ".%d", oid[i]); +} + /* * Converts a syscall argument into a string. Said string is * allocated via malloc(), so needs to be free()'d. sc is @@ -2253,6 +2269,62 @@ print_arg(struct syscall_args *sc, unsigned long *args print_integer_arg(sysdecode_sysarch_number, fp, args[sc->offset]); break; + case Sysctl: { + char name[BUFSIZ]; + int oid[CTL_MAXNAME + 2], qoid[CTL_MAXNAME + 2]; + size_t i; + int len; + + memset(name, 0, sizeof(name)); + len = args[sc->offset + 1]; + if (get_struct(pid, (void *)args[sc->offset], oid, + len * sizeof(oid[0])) != -1) { + fprintf(fp, "\""); + if (oid[0] == CTL_SYSCTL) { + fprintf(fp, "sysctl."); + switch (oid[1]) { + case CTL_SYSCTL_DEBUG: + fprintf(fp, "debug"); + break; + case CTL_SYSCTL_NAME: + fprintf(fp, "name"); + print_sysctl_oid(fp, oid + 2, len - 2); + break; + case CTL_SYSCTL_NEXT: + fprintf(fp, "next"); + break; + case CTL_SYSCTL_NAME2OID: + fprintf(fp, "name2oid"); + break; + case CTL_SYSCTL_OIDFMT: + fprintf(fp, "oidfmt"); + print_sysctl_oid(fp, oid + 2, len - 2); + break; + case CTL_SYSCTL_OIDDESCR: + fprintf(fp, "oiddescr"); + print_sysctl_oid(fp, oid + 2, len - 2); + break; + case CTL_SYSCTL_OIDLABEL: + fprintf(fp, "oidlabel"); + print_sysctl_oid(fp, oid + 2, len - 2); + break; + default: + print_sysctl_oid(fp, oid + 1, len - 1); + } + } else { + qoid[0] = CTL_SYSCTL; + qoid[1] = CTL_SYSCTL_NAME; + memcpy(qoid + 2, oid, len * sizeof(int)); + i = sizeof(name); + if (sysctl(qoid, len + 2, name, &i, 0, 0) == -1) + print_sysctl_oid(fp, qoid + 2, len); + else + fprintf(fp, "%s", name); + } + fprintf(fp, "\""); + } + break; + } case PipeFds: /* * The pipe() system call in the kernel returns its
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