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-rw-r--r--src/sim/syscall_emul.cc104
-rw-r--r--src/sim/syscall_emul.hh54
2 files changed, 91 insertions, 67 deletions
diff --git a/src/sim/syscall_emul.cc b/src/sim/syscall_emul.cc
index 4f1cd2a75..97b91331e 100644
--- a/src/sim/syscall_emul.cc
+++ b/src/sim/syscall_emul.cc
@@ -210,13 +210,17 @@ SyscallReturn
closeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
int index = 0;
- int target_fd = p->getSyscallArg(tc, index);
- int sim_fd = p->sim_fd(target_fd);
+ int tgt_fd = p->getSyscallArg(tc, index);
+
+ int sim_fd = p->sim_fd(tgt_fd);
+ if (sim_fd < 0)
+ return -EBADF;
+
int status = 0;
if (sim_fd > 2)
status = close(sim_fd);
if (status >= 0)
- p->reset_fd_entry(target_fd);
+ p->reset_fd_entry(tgt_fd);
return status;
}
@@ -225,13 +229,16 @@ SyscallReturn
readFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
int index = 0;
- int fd = p->sim_fd(p->getSyscallArg(tc, index));
- assert(fd >= 0);
+ int tgt_fd = p->getSyscallArg(tc, index);
Addr bufPtr = p->getSyscallArg(tc, index);
int nbytes = p->getSyscallArg(tc, index);
BufferArg bufArg(bufPtr, nbytes);
- int bytes_read = read(fd, bufArg.bufferPtr(), nbytes);
+ int sim_fd = p->sim_fd(tgt_fd);
+ if (sim_fd < 0)
+ return -EBADF;
+
+ int bytes_read = read(sim_fd, bufArg.bufferPtr(), nbytes);
if (bytes_read != -1)
bufArg.copyOut(tc->getMemProxy());
@@ -243,16 +250,20 @@ SyscallReturn
writeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
int index = 0;
- int fd = p->sim_fd(p->getSyscallArg(tc, index));
+ int tgt_fd = p->getSyscallArg(tc, index);
Addr bufPtr = p->getSyscallArg(tc, index);
int nbytes = p->getSyscallArg(tc, index);
BufferArg bufArg(bufPtr, nbytes);
+ int sim_fd = p->sim_fd(tgt_fd);
+ if (sim_fd < 0)
+ return -EBADF;
+
bufArg.copyIn(tc->getMemProxy());
- int bytes_written = write(fd, bufArg.bufferPtr(), nbytes);
+ int bytes_written = write(sim_fd, bufArg.bufferPtr(), nbytes);
- fsync(fd);
+ fsync(sim_fd);
return bytes_written;
}
@@ -262,12 +273,15 @@ SyscallReturn
lseekFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
int index = 0;
- int fd = p->sim_fd(p->getSyscallArg(tc, index));
- assert(fd >= 0);
+ int tgt_fd = p->getSyscallArg(tc, index);
uint64_t offs = p->getSyscallArg(tc, index);
int whence = p->getSyscallArg(tc, index);
- off_t result = lseek(fd, offs, whence);
+ int sim_fd = p->sim_fd(tgt_fd);
+ if (sim_fd < 0)
+ return -EBADF;
+
+ off_t result = lseek(sim_fd, offs, whence);
return (result == (off_t)-1) ? -errno : result;
}
@@ -277,16 +291,19 @@ SyscallReturn
_llseekFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
int index = 0;
- int fd = p->sim_fd(p->getSyscallArg(tc, index));
- assert(fd >= 0);
+ int tgt_fd = p->getSyscallArg(tc, index);
uint64_t offset_high = p->getSyscallArg(tc, index);
uint32_t offset_low = p->getSyscallArg(tc, index);
Addr result_ptr = p->getSyscallArg(tc, index);
int whence = p->getSyscallArg(tc, index);
+ int sim_fd = p->sim_fd(tgt_fd);
+ if (sim_fd < 0)
+ return -EBADF;
+
uint64_t offset = (offset_high << 32) | offset_low;
- uint64_t result = lseek(fd, offset, whence);
+ uint64_t result = lseek(sim_fd, offset, whence);
result = TheISA::htog(result);
if (result == (off_t)-1) {
@@ -481,14 +498,14 @@ ftruncateFunc(SyscallDesc *desc, int num,
LiveProcess *process, ThreadContext *tc)
{
int index = 0;
- int fd = process->sim_fd(process->getSyscallArg(tc, index));
+ int tgt_fd = process->getSyscallArg(tc, index);
+ off_t length = process->getSyscallArg(tc, index);
- if (fd < 0)
+ int sim_fd = process->sim_fd(tgt_fd);
+ if (sim_fd < 0)
return -EBADF;
- off_t length = process->getSyscallArg(tc, index);
-
- int result = ftruncate(fd, length);
+ int result = ftruncate(sim_fd, length);
return (result == -1) ? -errno : result;
}
@@ -520,17 +537,17 @@ ftruncate64Func(SyscallDesc *desc, int num,
LiveProcess *process, ThreadContext *tc)
{
int index = 0;
- int fd = process->sim_fd(process->getSyscallArg(tc, index));
+ int tgt_fd = process->getSyscallArg(tc, index);
+ int64_t length = process->getSyscallArg(tc, index, 64);
- if (fd < 0)
+ int sim_fd = process->sim_fd(tgt_fd);
+ if (sim_fd < 0)
return -EBADF;
- int64_t length = process->getSyscallArg(tc, index, 64);
-
#if NO_STAT64
- int result = ftruncate(fd, length);
+ int result = ftruncate(sim_fd, length);
#else
- int result = ftruncate64(fd, length);
+ int result = ftruncate64(sim_fd, length);
#endif
return (result == -1) ? -errno : result;
}
@@ -572,9 +589,10 @@ SyscallReturn
fchownFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc)
{
int index = 0;
- int fd = process->sim_fd(process->getSyscallArg(tc, index));
+ int tgt_fd = process->getSyscallArg(tc, index);
- if (fd < 0)
+ int sim_fd = process->sim_fd(tgt_fd);
+ if (sim_fd < 0)
return -EBADF;
/* XXX endianess */
@@ -583,7 +601,7 @@ fchownFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc)
uint32_t group = process->getSyscallArg(tc, index);
gid_t hostGroup = group;
- int result = fchown(fd, hostOwner, hostGroup);
+ int result = fchown(sim_fd, hostOwner, hostGroup);
return (result == -1) ? -errno : result;
}
@@ -593,6 +611,7 @@ dupFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc)
{
int index = 0;
int tgt_fd = process->getSyscallArg(tc, index);
+
int sim_fd = process->sim_fd(tgt_fd);
if (sim_fd < 0)
return -EBADF;
@@ -610,9 +629,10 @@ fcntlFunc(SyscallDesc *desc, int num, LiveProcess *process,
ThreadContext *tc)
{
int index = 0;
- int fd = process->getSyscallArg(tc, index);
+ int tgt_fd = process->getSyscallArg(tc, index);
- if (fd < 0 || process->sim_fd(fd) < 0)
+ int sim_fd = process->sim_fd(tgt_fd);
+ if (sim_fd < 0)
return -EBADF;
int cmd = process->getSyscallArg(tc, index);
@@ -620,7 +640,7 @@ fcntlFunc(SyscallDesc *desc, int num, LiveProcess *process,
case 0: // F_DUPFD
// if we really wanted to support this, we'd need to do it
// in the target fd space.
- warn("fcntl(%d, F_DUPFD) not supported, error returned\n", fd);
+ warn("fcntl(%d, F_DUPFD) not supported, error returned\n", tgt_fd);
return -EMFILE;
case 1: // F_GETFD (get close-on-exec flag)
@@ -631,15 +651,15 @@ fcntlFunc(SyscallDesc *desc, int num, LiveProcess *process,
case 4: // F_SETFL (set file flags)
// not sure if this is totally valid, but we'll pass it through
// to the underlying OS
- warn("fcntl(%d, %d) passed through to host\n", fd, cmd);
- return fcntl(process->sim_fd(fd), cmd);
+ warn("fcntl(%d, %d) passed through to host\n", tgt_fd, cmd);
+ return fcntl(sim_fd, cmd);
// return 0;
case 7: // F_GETLK (get lock)
case 8: // F_SETLK (set lock)
case 9: // F_SETLKW (set lock and wait)
// don't mess with file locking... just act like it's OK
- warn("File lock call (fcntl(%d, %d)) ignored.\n", fd, cmd);
+ warn("File lock call (fcntl(%d, %d)) ignored.\n", tgt_fd, cmd);
return 0;
default:
@@ -653,27 +673,29 @@ fcntl64Func(SyscallDesc *desc, int num, LiveProcess *process,
ThreadContext *tc)
{
int index = 0;
- int fd = process->getSyscallArg(tc, index);
+ int tgt_fd = process->getSyscallArg(tc, index);
- if (fd < 0 || process->sim_fd(fd) < 0)
+ int sim_fd = process->sim_fd(tgt_fd);
+ if (sim_fd < 0)
return -EBADF;
int cmd = process->getSyscallArg(tc, index);
switch (cmd) {
case 33: //F_GETLK64
- warn("fcntl64(%d, F_GETLK64) not supported, error returned\n", fd);
+ warn("fcntl64(%d, F_GETLK64) not supported, error returned\n", tgt_fd);
return -EMFILE;
case 34: // F_SETLK64
case 35: // F_SETLKW64
- warn("fcntl64(%d, F_SETLK(W)64) not supported, error returned\n", fd);
+ warn("fcntl64(%d, F_SETLK(W)64) not supported, error returned\n",
+ tgt_fd);
return -EMFILE;
default:
// not sure if this is totally valid, but we'll pass it through
// to the underlying OS
- warn("fcntl64(%d, %d) passed through to host\n", fd, cmd);
- return fcntl(process->sim_fd(fd), cmd);
+ warn("fcntl64(%d, %d) passed through to host\n", tgt_fd, cmd);
+ return fcntl(sim_fd, cmd);
// return 0;
}
}
diff --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh
index b942cb601..5ed697314 100644
--- a/src/sim/syscall_emul.hh
+++ b/src/sim/syscall_emul.hh
@@ -809,20 +809,20 @@ fchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
ThreadContext *tc)
{
int index = 0;
- int fd = process->getSyscallArg(tc, index);
- if (fd < 0 || process->sim_fd(fd) < 0) {
- // doesn't map to any simulator fd: not a valid target fd
+ int tgt_fd = process->getSyscallArg(tc, index);
+ uint32_t mode = process->getSyscallArg(tc, index);
+
+ int sim_fd = process->sim_fd(tgt_fd);
+ if (sim_fd < 0)
return -EBADF;
- }
- uint32_t mode = process->getSyscallArg(tc, index);
mode_t hostMode = 0;
// XXX translate mode flags via OS::someting???
hostMode = mode;
// do the fchmod
- int result = fchmod(process->sim_fd(fd), hostMode);
+ int result = fchmod(sim_fd, hostMode);
if (result < 0)
return -errno;
@@ -1003,25 +1003,25 @@ fstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
ThreadContext *tc)
{
int index = 0;
- int fd = process->getSyscallArg(tc, index);
+ int tgt_fd = process->getSyscallArg(tc, index);
Addr bufPtr = process->getSyscallArg(tc, index);
- if (fd < 0 || process->sim_fd(fd) < 0) {
- // doesn't map to any simulator fd: not a valid target fd
+
+ int sim_fd = process->sim_fd(tgt_fd);
+ if (sim_fd < 0)
return -EBADF;
- }
#if NO_STAT64
struct stat hostBuf;
- int result = fstat(process->sim_fd(fd), &hostBuf);
+ int result = fstat(sim_fd, &hostBuf);
#else
struct stat64 hostBuf;
- int result = fstat64(process->sim_fd(fd), &hostBuf);
+ int result = fstat64(sim_fd, &hostBuf);
#endif
if (result < 0)
return -errno;
- copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1));
+ copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1));
return 0;
}
@@ -1097,21 +1097,22 @@ fstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
ThreadContext *tc)
{
int index = 0;
- int fd = process->sim_fd(process->getSyscallArg(tc, index));
+ int tgt_fd = process->getSyscallArg(tc, index);
Addr bufPtr = process->getSyscallArg(tc, index);
- DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", fd);
+ DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", tgt_fd);
- if (fd < 0)
+ int sim_fd = process->sim_fd(tgt_fd);
+ if (sim_fd < 0)
return -EBADF;
struct stat hostBuf;
- int result = fstat(fd, &hostBuf);
+ int result = fstat(sim_fd, &hostBuf);
if (result < 0)
return -errno;
- copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1));
+ copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1));
return 0;
}
@@ -1154,14 +1155,15 @@ fstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
ThreadContext *tc)
{
int index = 0;
- int fd = process->sim_fd(process->getSyscallArg(tc, index));
+ int tgt_fd = process->getSyscallArg(tc, index);
Addr bufPtr = process->getSyscallArg(tc, index);
- if (fd < 0)
+ int sim_fd = process->sim_fd(tgt_fd);
+ if (sim_fd < 0)
return -EBADF;
struct statfs hostBuf;
- int result = fstatfs(fd, &hostBuf);
+ int result = fstatfs(sim_fd, &hostBuf);
if (result < 0)
return -errno;
@@ -1179,11 +1181,11 @@ writevFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
ThreadContext *tc)
{
int index = 0;
- int fd = process->getSyscallArg(tc, index);
- if (fd < 0 || process->sim_fd(fd) < 0) {
- // doesn't map to any simulator fd: not a valid target fd
+ int tgt_fd = process->getSyscallArg(tc, index);
+
+ int sim_fd = process->sim_fd(tgt_fd);
+ if (sim_fd < 0)
return -EBADF;
- }
SETranslatingPortProxy &p = tc->getMemProxy();
uint64_t tiov_base = process->getSyscallArg(tc, index);
@@ -1200,7 +1202,7 @@ writevFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
hiov[i].iov_len);
}
- int result = writev(process->sim_fd(fd), hiov, count);
+ int result = writev(sim_fd, hiov, count);
for (size_t i = 0; i < count; ++i)
delete [] (char *)hiov[i].iov_base;
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-19 11:03:57 +0000