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sim-se: Implement mknodat syscall

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JIRA: https://gem5.atlassian.net/browse/GEM5-1098

Change-Id: Ic6b6b9350bcffdaed368373a6bffe4f9ece5feee
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/51056
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
This commit is contained in:
Giacomo Travaglini
2021-09-28 09:01:14 +01:00
parent a680b98eaf
commit b4f73b8965
2 changed files with 28 additions and 1 deletions
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9
src/sim/syscall_emul.cc
View File

@@ -928,11 +928,18 @@ SyscallReturn
mknodFunc(SyscallDesc *desc, ThreadContext *tc,
VPtr<> pathname, mode_t mode, dev_t dev)
{
auto p = tc->getProcessPtr();
std::string path;
if (!SETranslatingPortProxy(tc).tryReadString(path, pathname))
return -EFAULT;
return mknodImpl(desc, tc, path, mode, dev);
}
SyscallReturn
mknodImpl(SyscallDesc *desc, ThreadContext *tc,
std::string path, mode_t mode, dev_t dev)
{
auto p = tc->getProcessPtr();
path = p->checkPathRedirect(path);
auto result = mknod(path.c_str(), mode, dev);

20
src/sim/syscall_emul.hh
View File

@@ -203,6 +203,8 @@ SyscallReturn mkdirImpl(SyscallDesc *desc, ThreadContext *tc,
/// Target mknod() handler.
SyscallReturn mknodFunc(SyscallDesc *desc, ThreadContext *tc,
VPtr<> pathname, mode_t mode, dev_t dev);
SyscallReturn mknodImpl(SyscallDesc *desc, ThreadContext *tc,
std::string path, mode_t mode, dev_t dev);
/// Target chdir() handler.
SyscallReturn chdirFunc(SyscallDesc *desc, ThreadContext *tc, VPtr<> pathname);
@@ -1092,6 +1094,24 @@ mkdiratFunc(SyscallDesc *desc, ThreadContext *tc,
return mkdirImpl(desc, tc, path, mode);
}
/// Target mknodat() handler
template <class OS>
SyscallReturn
mknodatFunc(SyscallDesc *desc, ThreadContext *tc,
int dirfd, VPtr<> pathname, mode_t mode, dev_t dev)
{
std::string path;
if (!SETranslatingPortProxy(tc).tryReadString(path, pathname))
return -EFAULT;
// Modifying path from the directory descriptor
if (auto res = atSyscallPath<OS>(tc, dirfd, path); !res.successful()) {
return res;
}
return mknodImpl(desc, tc, path, mode, dev);
}
/// Target sysinfo() handler.
template <class OS>
SyscallReturn