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Kernel+LibC: Remove setreuid() / setregid() again

Browse source 
It looks like they're considered a bad idea, so let's not add
them before we need them. I figured it's good to have them in
git history if we ever do need them though, hence the add/remove
dance.
This commit is contained in:
Nico Weber 2020-06-17 14:08:14 -04:00 • committed by Andreas Kling
parent a38754d9f2
commit dd53e070c5
5 changed files with 0 additions and 60 deletions
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42
Kernel/Process.cpp
View file

@ -2187,48 +2187,6 @@ int Process::sys$setgid(gid_t gid)
return 0; return 0;
} }
int Process::sys$setreuid(uid_t ruid, uid_t euid)
{
REQUIRE_PROMISE(id);
// This has FreeBSD semantics.
// Linux and Solaris also allow id == m_suid.
auto ok = [this](uid_t id) { return id == (uid_t)-1 || id == m_uid || id == m_euid; };
if ((!ok(ruid) || !ok(euid)) && !is_superuser())
return -EPERM;
if (ruid != (uid_t)-1)
m_uid = ruid;
if (euid != (uid_t)-1)
m_euid = euid;
if (ruid != (uid_t)-1 || m_euid != m_uid)
m_suid = m_euid;
return 0;
}
int Process::sys$setregid(gid_t rgid, gid_t egid)
{
REQUIRE_PROMISE(id);
// This has FreeBSD semantics.
// Linux and Solaris also allow id == m_sgid.
auto ok = [this](gid_t id) { return id == (gid_t)-1 || id == m_gid || id == m_egid; };
if ((!ok(rgid) || !ok(egid)) && !is_superuser())
return -EPERM;
if (rgid != (gid_t)-1)
m_gid = rgid;
if (egid != (gid_t)-1)
m_egid = egid;
if (rgid != (gid_t)-1 || m_egid != m_gid)
m_sgid = m_egid;
return 0;
}
int Process::sys$setresuid(uid_t ruid, uid_t euid, uid_t suid) int Process::sys$setresuid(uid_t ruid, uid_t euid, uid_t suid)
{ {
REQUIRE_PROMISE(id); REQUIRE_PROMISE(id);

2
Kernel/Process.h
View file

@ -249,8 +249,6 @@ public:
int sys$setegid(gid_t); int sys$setegid(gid_t);
int sys$setuid(uid_t); int sys$setuid(uid_t);
int sys$setgid(gid_t); int sys$setgid(gid_t);
int sys$setreuid(uid_t, uid_t);
int sys$setregid(gid_t, gid_t);
int sys$setresuid(uid_t, uid_t, uid_t); int sys$setresuid(uid_t, uid_t, uid_t);
int sys$setresgid(gid_t, gid_t, gid_t); int sys$setresgid(gid_t, gid_t, gid_t);
unsigned sys$alarm(unsigned seconds); unsigned sys$alarm(unsigned seconds);

2
Kernel/Syscall.h
View file

@ -98,8 +98,6 @@ namespace Kernel {
__ENUMERATE_SYSCALL(setegid) \ __ENUMERATE_SYSCALL(setegid) \
__ENUMERATE_SYSCALL(setuid) \ __ENUMERATE_SYSCALL(setuid) \
__ENUMERATE_SYSCALL(setgid) \ __ENUMERATE_SYSCALL(setgid) \
__ENUMERATE_SYSCALL(setreuid) \
__ENUMERATE_SYSCALL(setregid) \
__ENUMERATE_SYSCALL(setresuid) \ __ENUMERATE_SYSCALL(setresuid) \
__ENUMERATE_SYSCALL(setresgid) \ __ENUMERATE_SYSCALL(setresgid) \
__ENUMERATE_SYSCALL(alarm) \ __ENUMERATE_SYSCALL(alarm) \

12
Libraries/LibC/unistd.cpp
View file

@ -491,18 +491,6 @@ int setgid(gid_t gid)
__RETURN_WITH_ERRNO(rc, rc, -1); __RETURN_WITH_ERRNO(rc, rc, -1);
} }
int setreuid(uid_t ruid, uid_t euid)
{
int rc = syscall(SC_setreuid, ruid, euid);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
int setregid(gid_t rgid, gid_t egid)
{
int rc = syscall(SC_setregid, rgid, egid);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
int setresuid(uid_t ruid, uid_t euid, uid_t suid) int setresuid(uid_t ruid, uid_t euid, uid_t suid)
{ {
int rc = syscall(SC_setresuid, ruid, euid, suid); int rc = syscall(SC_setresuid, ruid, euid, suid);

2
Libraries/LibC/unistd.h
View file

@ -92,8 +92,6 @@ int seteuid(uid_t);
int setegid(gid_t); int setegid(gid_t);
int setuid(uid_t); int setuid(uid_t);
int setgid(gid_t); int setgid(gid_t);
int setreuid(uid_t, uid_t);
int setregid(gid_t, gid_t);
int setresuid(uid_t, uid_t, uid_t); int setresuid(uid_t, uid_t, uid_t);
int setresgid(gid_t, gid_t, gid_t); int setresgid(gid_t, gid_t, gid_t);
pid_t tcgetpgrp(int fd); pid_t tcgetpgrp(int fd);