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| author | Matt Sinclair <mattdsinclair@gmail.com> | 2018-06-21 19:31:09 -0400 |
|---|---|---|
| committer | Matt Sinclair <mattdsinclair@gmail.com> | 2018-06-25 20:42:30 +0000 |
| commit | 1678a08ded7e00049f4335d856c91043904002f7 (patch) | |
| tree | d96eed3f514842fc7df4b8165a760019b1bbae1e | |
| parent | 3fb16fa3a3990ee4d2d2546d51db2220adb61a46 (diff) | |
| download | gem5-1678a08ded7e00049f4335d856c91043904002f7.tar.xz | |
syscall_emul: adding symlink system call
Change-Id: Iebda05c130b4d2ee8434cad1e703933bfda486c8
Reviewed-on: https://gem5-review.googlesource.com/11490
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
| -rw-r--r-- | src/arch/x86/linux/process.cc | 2 | ||||
| -rw-r--r-- | src/sim/syscall_emul.cc | 20 | ||||
| -rw-r--r-- | src/sim/syscall_emul.hh | 4 |
3 files changed, 25 insertions, 1 deletions
diff --git a/src/arch/x86/linux/process.cc b/src/arch/x86/linux/process.cc index 5717218f9..51512fdda 100644 --- a/src/arch/x86/linux/process.cc +++ b/src/arch/x86/linux/process.cc @@ -308,7 +308,7 @@ static SyscallDesc syscallDescs64[] = { /* 85 */ SyscallDesc("creat", unimplementedFunc), /* 86 */ SyscallDesc("link", linkFunc), /* 87 */ SyscallDesc("unlink", unlinkFunc), - /* 88 */ SyscallDesc("symlink", unimplementedFunc), + /* 88 */ SyscallDesc("symlink", symlinkFunc), /* 89 */ SyscallDesc("readlink", readlinkFunc), /* 90 */ SyscallDesc("chmod", unimplementedFunc), /* 91 */ SyscallDesc("fchmod", unimplementedFunc), diff --git a/src/sim/syscall_emul.cc b/src/sim/syscall_emul.cc index c56963acf..dd2323eaa 100644 --- a/src/sim/syscall_emul.cc +++ b/src/sim/syscall_emul.cc @@ -540,6 +540,26 @@ linkFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) } SyscallReturn +symlinkFunc(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 = symlink(path.c_str(), new_path.c_str()); + return (result == -1) ? -errno : result; +} + +SyscallReturn mkdirFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) { string path; diff --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh index e3d99cea9..1f4233aa8 100644 --- a/src/sim/syscall_emul.hh +++ b/src/sim/syscall_emul.hh @@ -207,6 +207,10 @@ SyscallReturn unlinkFunc(SyscallDesc *desc, int num, SyscallReturn linkFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc); +/// Target symlink() handler. +SyscallReturn symlinkFunc(SyscallDesc *desc, int num, Process *p, + ThreadContext *tc); + /// Target mkdir() handler. SyscallReturn mkdirFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc); |