diff options
| -rw-r--r-- | src/arch/x86/linux/process.cc | 2 | ||||
| -rw-r--r-- | src/sim/syscall_emul.cc | 19 | ||||
| -rw-r--r-- | src/sim/syscall_emul.hh | 4 |
3 files changed, 24 insertions, 1 deletions
diff --git a/src/arch/x86/linux/process.cc b/src/arch/x86/linux/process.cc index 7993b80f5..5717218f9 100644 --- a/src/arch/x86/linux/process.cc +++ b/src/arch/x86/linux/process.cc @@ -306,7 +306,7 @@ static SyscallDesc syscallDescs64[] = { /* 83 */ SyscallDesc("mkdir", unimplementedFunc), /* 84 */ SyscallDesc("rmdir", unimplementedFunc), /* 85 */ SyscallDesc("creat", unimplementedFunc), - /* 86 */ SyscallDesc("link", unimplementedFunc), + /* 86 */ SyscallDesc("link", linkFunc), /* 87 */ SyscallDesc("unlink", unlinkFunc), /* 88 */ SyscallDesc("symlink", unimplementedFunc), /* 89 */ SyscallDesc("readlink", readlinkFunc), diff --git a/src/sim/syscall_emul.cc b/src/sim/syscall_emul.cc index 7f4d76630..c56963acf 100644 --- a/src/sim/syscall_emul.cc +++ b/src/sim/syscall_emul.cc @@ -519,6 +519,25 @@ unlinkHelper(SyscallDesc *desc, int num, Process *p, ThreadContext *tc, return (result == -1) ? -errno : result; } +SyscallReturn +linkFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) +{ + string path; + string new_path; + + int index = 0; + auto &virt_mem = tc->getMemProxy(); + if (!virt_mem.tryReadString(path, p->getSyscallArg(tc, index))) + return -EFAULT; + if (!virt_mem.tryReadString(new_path, p->getSyscallArg(tc, index))) + return -EFAULT; + + path = p->fullPath(path); + new_path = p->fullPath(new_path); + + int result = link(path.c_str(), new_path.c_str()); + return (result == -1) ? -errno : result; +} SyscallReturn mkdirFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) diff --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh index e5b0f455a..e3d99cea9 100644 --- a/src/sim/syscall_emul.hh +++ b/src/sim/syscall_emul.hh @@ -203,6 +203,10 @@ SyscallReturn unlinkHelper(SyscallDesc *desc, int num, SyscallReturn unlinkFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc); +/// Target link() handler +SyscallReturn linkFunc(SyscallDesc *desc, int num, Process *p, + ThreadContext *tc); + /// Target mkdir() handler. SyscallReturn mkdirFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc); |