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syscalls: Add a bunch of missing system calls.

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readlink, umask, truncate, ftruncate, mkdir, and getcwd.
This commit is contained in:
Michael Adler 2008-07-23 14:41:33 -07:00
parent 8c4f18f6f5
commit 2cd04fd6da
8 changed files with 121 additions and 20 deletions
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12
src/arch/alpha/linux/process.cc
View file

@ -179,9 +179,9 @@ SyscallDesc AlphaLinuxProcess::syscallDescs[] = {
/* 55 */ SyscallDesc("osf_reboot", unimplementedFunc),
/* 56 */ SyscallDesc("osf_revoke", unimplementedFunc),
/* 57 */ SyscallDesc("symlink", unimplementedFunc),
/* 58 */ SyscallDesc("readlink", unimplementedFunc),
/* 58 */ SyscallDesc("readlink", readlinkFunc),
/* 59 */ SyscallDesc("execve", unimplementedFunc),
/* 60 */ SyscallDesc("umask", unimplementedFunc),
/* 60 */ SyscallDesc("umask", umaskFunc),
/* 61 */ SyscallDesc("chroot", unimplementedFunc),
/* 62 */ SyscallDesc("osf_old_fstat", unimplementedFunc),
/* 63 */ SyscallDesc("getpgrp", unimplementedFunc),
@ -250,14 +250,14 @@ SyscallDesc AlphaLinuxProcess::syscallDescs[] = {
/* 126 */ SyscallDesc("setreuid", unimplementedFunc),
/* 127 */ SyscallDesc("setregid", unimplementedFunc),
/* 128 */ SyscallDesc("rename", renameFunc),
/* 129 */ SyscallDesc("truncate", unimplementedFunc),
/* 130 */ SyscallDesc("ftruncate", unimplementedFunc),
/* 129 */ SyscallDesc("truncate", truncateFunc),
/* 130 */ SyscallDesc("ftruncate", ftruncateFunc),
/* 131 */ SyscallDesc("flock", unimplementedFunc),
/* 132 */ SyscallDesc("setgid", unimplementedFunc),
/* 133 */ SyscallDesc("sendto", unimplementedFunc),
/* 134 */ SyscallDesc("shutdown", unimplementedFunc),
/* 135 */ SyscallDesc("socketpair", unimplementedFunc),
/* 136 */ SyscallDesc("mkdir", unimplementedFunc),
/* 136 */ SyscallDesc("mkdir", mkdirFunc),
/* 137 */ SyscallDesc("rmdir", unimplementedFunc),
/* 138 */ SyscallDesc("osf_utimes", unimplementedFunc),
/* 139 */ SyscallDesc("osf_old_sigreturn", unimplementedFunc),
@ -491,7 +491,7 @@ SyscallDesc AlphaLinuxProcess::syscallDescs[] = {
/* 364 */ SyscallDesc("getrusage", getrusageFunc<AlphaLinux>),
/* 365 */ SyscallDesc("wait4", unimplementedFunc),
/* 366 */ SyscallDesc("adjtimex", unimplementedFunc),
/* 367 */ SyscallDesc("getcwd", unimplementedFunc),
/* 367 */ SyscallDesc("getcwd", getcwdFunc),
/* 368 */ SyscallDesc("capget", unimplementedFunc),
/* 369 */ SyscallDesc("capset", unimplementedFunc),
/* 370 */ SyscallDesc("sendfile", unimplementedFunc),

6
src/arch/alpha/tru64/process.cc
View file

@ -260,9 +260,9 @@ SyscallDesc AlphaTru64Process::syscallDescs[] = {
/* 55 */ SyscallDesc("reboot", unimplementedFunc),
/* 56 */ SyscallDesc("revoke", unimplementedFunc),
/* 57 */ SyscallDesc("symlink", unimplementedFunc),
/* 58 */ SyscallDesc("readlink", unimplementedFunc),
/* 58 */ SyscallDesc("readlink", readlinkFunc),
/* 59 */ SyscallDesc("execve", unimplementedFunc),
/* 60 */ SyscallDesc("umask", unimplementedFunc),
/* 60 */ SyscallDesc("umask", umaskFunc),
/* 61 */ SyscallDesc("chroot", unimplementedFunc),
/* 62 */ SyscallDesc("old_fstat", unimplementedFunc),
/* 63 */ SyscallDesc("getpgrp", unimplementedFunc),
@ -339,7 +339,7 @@ SyscallDesc AlphaTru64Process::syscallDescs[] = {
/* 133 */ SyscallDesc("sendto", unimplementedFunc),
/* 134 */ SyscallDesc("shutdown", unimplementedFunc),
/* 135 */ SyscallDesc("socketpair", unimplementedFunc),
/* 136 */ SyscallDesc("mkdir", unimplementedFunc),
/* 136 */ SyscallDesc("mkdir", mkdirFunc),
/* 137 */ SyscallDesc("rmdir", unimplementedFunc),
/* 138 */ SyscallDesc("utimes", unimplementedFunc),
/* 139 */ SyscallDesc("obsolete 4.2 sigreturn", unimplementedFunc),

8
src/arch/mips/linux/process.cc
View file

@ -160,7 +160,7 @@ SyscallDesc MipsLinuxProcess::syscallDescs[] = {
/* 36 */ SyscallDesc("sync", unimplementedFunc),
/* 37 */ SyscallDesc("kill", unimplementedFunc),
/* 38 */ SyscallDesc("rename", unimplementedFunc),
/* 39 */ SyscallDesc("mkdir", unimplementedFunc),
/* 39 */ SyscallDesc("mkdir", mkdirFunc),
/* 40 */ SyscallDesc("rmdir", unimplementedFunc),
/* 41 */ SyscallDesc("dup", unimplementedFunc),
/* 42 */ SyscallDesc("pipe", pipePseudoFunc),
@ -181,7 +181,7 @@ SyscallDesc MipsLinuxProcess::syscallDescs[] = {
/* 57 */ SyscallDesc("setpgid", unimplementedFunc),
/* 58 */ SyscallDesc("ulimit", unimplementedFunc),
/* 59 */ SyscallDesc("unused#59", unimplementedFunc),
/* 60 */ SyscallDesc("umask", unimplementedFunc),
/* 60 */ SyscallDesc("umask", umaskFunc),
/* 61 */ SyscallDesc("chroot", unimplementedFunc),
/* 62 */ SyscallDesc("ustat", unimplementedFunc),
/* 63 */ SyscallDesc("dup2", unimplementedFunc),
@ -206,7 +206,7 @@ SyscallDesc MipsLinuxProcess::syscallDescs[] = {
/* 82 */ SyscallDesc("reserved#82", unimplementedFunc),
/* 83 */ SyscallDesc("symlink", unimplementedFunc),
/* 84 */ SyscallDesc("unused#84", unimplementedFunc),
/* 85 */ SyscallDesc("readlink", unimplementedFunc),
/* 85 */ SyscallDesc("readlink", readlinkFunc),
/* 86 */ SyscallDesc("uselib", unimplementedFunc),
/* 87 */ SyscallDesc("swapon", gethostnameFunc),
/* 88 */ SyscallDesc("reboot", unimplementedFunc),
@ -324,7 +324,7 @@ SyscallDesc MipsLinuxProcess::syscallDescs[] = {
/* 200 */ SyscallDesc("pread64", unimplementedFunc),
/* 201 */ SyscallDesc("pwrite64", unimplementedFunc),
/* 202 */ SyscallDesc("chown", unimplementedFunc),
/* 203 */ SyscallDesc("getcwd", unimplementedFunc),
/* 203 */ SyscallDesc("getcwd", getcwdFunc),
/* 204 */ SyscallDesc("capget", unimplementedFunc),
/* 205 */ SyscallDesc("capset", unimplementedFunc),
/* 206 */ SyscallDesc("sigalstack", unimplementedFunc),

10
src/arch/sparc/linux/syscalls.cc
View file

@ -147,7 +147,7 @@ SyscallDesc SparcLinuxProcess::syscall32Descs[] = {
/* 55 */ SyscallDesc("reboot", unimplementedFunc), //32 bit
/* 56 */ SyscallDesc("mmap2", unimplementedFunc), //32 bit
/* 57 */ SyscallDesc("symlink", unimplementedFunc),
/* 58 */ SyscallDesc("readlink", unimplementedFunc), //32 bit
/* 58 */ SyscallDesc("readlink", readlinkFunc), //32 bit
/* 59 */ SyscallDesc("execve", unimplementedFunc), //32 bit
/* 60 */ SyscallDesc("umask", unimplementedFunc), //32 bit
/* 61 */ SyscallDesc("chroot", unimplementedFunc),
@ -208,7 +208,7 @@ SyscallDesc SparcLinuxProcess::syscall32Descs[] = {
/* 116 */ SyscallDesc("gettimeofday", unimplementedFunc), //32 bit
/* 117 */ SyscallDesc("getrusage", unimplementedFunc), //32 bit
/* 118 */ SyscallDesc("getsockopt", unimplementedFunc),
/* 119 */ SyscallDesc("getcwd", unimplementedFunc),
/* 119 */ SyscallDesc("getcwd", getcwdFunc),
/* 120 */ SyscallDesc("readv", unimplementedFunc),
/* 121 */ SyscallDesc("writev", unimplementedFunc),
/* 122 */ SyscallDesc("settimeofday", unimplementedFunc), //32 bit
@ -225,7 +225,7 @@ SyscallDesc SparcLinuxProcess::syscall32Descs[] = {
/* 133 */ SyscallDesc("sendto", unimplementedFunc),
/* 134 */ SyscallDesc("shutdown", unimplementedFunc),
/* 135 */ SyscallDesc("socketpair", unimplementedFunc),
/* 136 */ SyscallDesc("mkdir", unimplementedFunc), //32 bit
/* 136 */ SyscallDesc("mkdir", mkdirFunc), //32 bit
/* 137 */ SyscallDesc("rmdir", unimplementedFunc),
/* 138 */ SyscallDesc("utimes", unimplementedFunc), //32 bit
/* 139 */ SyscallDesc("stat64", unimplementedFunc),
@ -450,7 +450,7 @@ SyscallDesc SparcLinuxProcess::syscallDescs[] = {
/* 55 */ SyscallDesc("reboot", unimplementedFunc),
/* 56 */ SyscallDesc("mmap2", unimplementedFunc),
/* 57 */ SyscallDesc("symlink", unimplementedFunc),
/* 58 */ SyscallDesc("readlink", unimplementedFunc),
/* 58 */ SyscallDesc("readlink", readlinkFunc),
/* 59 */ SyscallDesc("execve", unimplementedFunc),
/* 60 */ SyscallDesc("umask", unimplementedFunc),
/* 61 */ SyscallDesc("chroot", unimplementedFunc),
@ -528,7 +528,7 @@ SyscallDesc SparcLinuxProcess::syscallDescs[] = {
/* 133 */ SyscallDesc("sendto", unimplementedFunc),
/* 134 */ SyscallDesc("shutdown", unimplementedFunc),
/* 135 */ SyscallDesc("socketpair", unimplementedFunc),
/* 136 */ SyscallDesc("mkdir", unimplementedFunc),
/* 136 */ SyscallDesc("mkdir", mkdirFunc),
/* 137 */ SyscallDesc("rmdir", unimplementedFunc),
/* 138 */ SyscallDesc("utimes", unimplementedFunc),
/* 139 */ SyscallDesc("stat64", unimplementedFunc),

4
src/arch/sparc/solaris/process.cc
View file

@ -123,7 +123,7 @@ SyscallDesc SparcSolarisProcess::syscallDescs[] = {
/* 57 */ SyscallDesc("utssys", unimplementedFunc),
/* 58 */ SyscallDesc("fdsync", unimplementedFunc),
/* 59 */ SyscallDesc("execve", unimplementedFunc),
/* 60 */ SyscallDesc("umask", unimplementedFunc),
/* 60 */ SyscallDesc("umask", umaskFunc),
/* 61 */ SyscallDesc("chroot", unimplementedFunc),
/* 62 */ SyscallDesc("fcntl", unimplementedFunc),
/* 63 */ SyscallDesc("ulimit", unimplementedFunc),
@ -153,7 +153,7 @@ SyscallDesc SparcSolarisProcess::syscallDescs[] = {
/* 87 */ SyscallDesc("poll", unimplementedFunc),
/* 88 */ SyscallDesc("lstat", unimplementedFunc),
/* 89 */ SyscallDesc("symlink", unimplementedFunc),
/* 90 */ SyscallDesc("readlink", unimplementedFunc),
/* 90 */ SyscallDesc("readlink", readlinkFunc),
/* 91 */ SyscallDesc("setgroups", unimplementedFunc),
/* 92 */ SyscallDesc("getgroups", unimplementedFunc),
/* 93 */ SyscallDesc("fchmod", unimplementedFunc),

2
src/sim/process.hh
View file

@ -303,6 +303,8 @@ class LiveProcess : public Process
return full + filename;
}
std::string getcwd() const { return cwd; }
virtual void syscall(int64_t callnum, ThreadContext *tc);
virtual SyscallDesc* getDesc(int callnum) = 0;

82
src/sim/syscall_emul.cc
View file

@ -239,6 +239,59 @@ gethostnameFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
return 0;
}
SyscallReturn
getcwdFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
int result = 0;
unsigned long size = tc->getSyscallArg(1);
BufferArg buf(tc->getSyscallArg(0), size);
// Is current working directory defined?
string cwd = p->getcwd();
if (!cwd.empty()) {
if (cwd.length() >= size) {
// Buffer too small
return -ERANGE;
}
strncpy((char *)buf.bufferPtr(), cwd.c_str(), size);
result = cwd.length();
}
else {
if (getcwd((char *)buf.bufferPtr(), size) != NULL) {
result = strlen((char *)buf.bufferPtr());
}
else {
result = -1;
}
}
buf.copyOut(tc->getMemPort());
return (result == -1) ? -errno : result;
}
SyscallReturn
readlinkFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
string path;
if (!tc->getMemPort()->tryReadString(path, tc->getSyscallArg(0)))
return (TheISA::IntReg)-EFAULT;
// Adjust path for current working directory
path = p->fullPath(path);
size_t bufsiz = tc->getSyscallArg(2);
BufferArg buf(tc->getSyscallArg(1), bufsiz);
int result = readlink(path.c_str(), (char *)buf.bufferPtr(), bufsiz);
buf.copyOut(tc->getMemPort());
return (result == -1) ? -errno : result;
}
SyscallReturn
unlinkFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
@ -254,6 +307,24 @@ unlinkFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
return (result == -1) ? -errno : result;
}
SyscallReturn
mkdirFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
string path;
if (!tc->getMemPort()->tryReadString(path, tc->getSyscallArg(0)))
return (TheISA::IntReg)-EFAULT;
// Adjust path for current working directory
path = p->fullPath(path);
mode_t mode = tc->getSyscallArg(1);
int result = mkdir(path.c_str(), mode);
return (result == -1) ? -errno : result;
}
SyscallReturn
renameFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
@ -306,6 +377,17 @@ ftruncateFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *t
return (result == -1) ? -errno : result;
}
SyscallReturn
umaskFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc)
{
// Letting the simulated program change the simulator's umask seems like
// a bad idea. Compromise by just returning the current umask but not
// changing anything.
mode_t oldMask = umask(0);
umask(oldMask);
return oldMask;
}
SyscallReturn
chownFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{

17
src/sim/syscall_emul.hh
View file

@ -223,10 +223,22 @@ SyscallReturn munmapFunc(SyscallDesc *desc, int num,
SyscallReturn gethostnameFunc(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);
/// Target getcwd() handler.
SyscallReturn getcwdFunc(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);
/// Target unlink() handler.
SyscallReturn readlinkFunc(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);
/// Target unlink() handler.
SyscallReturn unlinkFunc(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);
/// Target mkdir() handler.
SyscallReturn mkdirFunc(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);
/// Target rename() handler.
SyscallReturn renameFunc(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);
@ -242,6 +254,11 @@ SyscallReturn ftruncateFunc(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);
/// Target umask() handler.
SyscallReturn umaskFunc(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);
/// Target chown() handler.
SyscallReturn chownFunc(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);