diff options
Diffstat (limited to 'usr.bin/truss/sparc64-fbsd.c')
-rw-r--r-- | usr.bin/truss/sparc64-fbsd.c | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/usr.bin/truss/sparc64-fbsd.c b/usr.bin/truss/sparc64-fbsd.c index 552eb60..9fc1db6 100644 --- a/usr.bin/truss/sparc64-fbsd.c +++ b/usr.bin/truss/sparc64-fbsd.c @@ -66,6 +66,7 @@ static const char rcsid[] = #include "truss.h" #include "syscall.h" +#include "extern.h" static int fd = -1; static int cpid = -1; @@ -86,7 +87,7 @@ static int nsyscalls = sizeof(syscallnames) / sizeof(syscallnames[0]); */ static struct freebsd_syscall { struct syscall *sc; - char *name; + const char *name; int number; unsigned long *args; int nargs; /* number of arguments -- *not* number of words! */ @@ -95,7 +96,7 @@ static struct freebsd_syscall { /* Clear up and free parts of the fsc structure. */ static __inline void -clear_fsc() { +clear_fsc(void) { if (fsc.args) { free(fsc.args); } @@ -120,7 +121,7 @@ void sparc64_syscall_entry(struct trussinfo *trussinfo, int nargs) { char buf[32]; struct reg regs; - int syscall; + int syscall_num; int i; struct syscall *sc; int indir = 0; /* indirect system call */ @@ -129,7 +130,7 @@ sparc64_syscall_entry(struct trussinfo *trussinfo, int nargs) { sprintf(buf, "/proc/%d/regs", trussinfo->pid); fd = open(buf, O_RDWR); if (fd == -1) { - fprintf(trussinfo->outfile, "-- CANNOT READ REGISTERS --\n"); + fprintf(trussinfo->outfile, "-- CANNOT OPEN REGISTERS --\n"); return; } cpid = trussinfo->pid; @@ -137,24 +138,27 @@ sparc64_syscall_entry(struct trussinfo *trussinfo, int nargs) { clear_fsc(); lseek(fd, 0L, 0); - i = read(fd, ®s, sizeof(regs)); + if (read(fd, ®s, sizeof(regs)) != sizeof(regs)) { + fprintf(trussinfo->outfile, "-- CANNOT READ REGISTERS --\n"); + return; + } /* * FreeBSD has two special kinds of system call redirctions -- * SYS_syscall, and SYS___syscall. The former is the old syscall() * routine, basicly; the latter is for quad-aligned arguments. */ - syscall = regs.r_global[1]; - if (syscall == SYS_syscall || syscall == SYS___syscall) { + syscall_num = regs.r_global[1]; + if (syscall_num == SYS_syscall || syscall_num == SYS___syscall) { indir = 1; - syscall = regs.r_out[0]; + syscall_num = regs.r_out[0]; } - fsc.number = syscall; + fsc.number = syscall_num; fsc.name = - (syscall < 0 || syscall > nsyscalls) ? NULL : syscallnames[syscall]; + (syscall_num < 0 || syscall_num > nsyscalls) ? NULL : syscallnames[syscall_num]; if (!fsc.name) { - fprintf(trussinfo->outfile, "-- UNKNOWN SYSCALL %d --\n", syscall); + fprintf(trussinfo->outfile, "-- UNKNOWN SYSCALL %d --\n", syscall_num); } if (fsc.name && (trussinfo->flags & FOLLOWFORKS) @@ -290,7 +294,7 @@ sparc64_syscall_entry(struct trussinfo *trussinfo, int nargs) { */ int -sparc64_syscall_exit(struct trussinfo *trussinfo, int syscall) { +sparc64_syscall_exit(struct trussinfo *trussinfo, int syscall_num __unused) { char buf[32]; struct reg regs; int retval; @@ -302,8 +306,8 @@ sparc64_syscall_exit(struct trussinfo *trussinfo, int syscall) { sprintf(buf, "/proc/%d/regs", trussinfo->pid); fd = open(buf, O_RDONLY); if (fd == -1) { - fprintf(trussinfo->outfile, "-- CANNOT READ REGISTERS --\n"); - return; + fprintf(trussinfo->outfile, "-- CANNOT OPEN REGISTERS --\n"); + return (-1); } cpid = trussinfo->pid; } @@ -311,7 +315,7 @@ sparc64_syscall_exit(struct trussinfo *trussinfo, int syscall) { lseek(fd, 0L, 0); if (read(fd, ®s, sizeof(regs)) != sizeof(regs)) { fprintf(trussinfo->outfile, "\n"); - return; + return (-1); } retval = regs.r_out[0]; errorp = !!(regs.r_tstate & TSTATE_XCC_C); |