summaryrefslogtreecommitdiff
path: root/src/unistd
diff options
context:
space:
mode:
authorRich Felker <dalias@aerifal.cx>2011-04-06 20:27:07 -0400
committerRich Felker <dalias@aerifal.cx>2011-04-06 20:27:07 -0400
commitb2486a8922bf4977bd82c8190258e39de28c053b (patch)
tree7e6a928a7fb8f84ab835ea9009ddb447487b44e4 /src/unistd
parent74950b336d27532718428c7f5f98409c74f30819 (diff)
downloadmusl-b2486a8922bf4977bd82c8190258e39de28c053b.tar.gz
move rsyscall out of pthread_create module
this is something of a tradeoff, as now set*id() functions, rather than pthread_create, are what pull in the code overhead for dealing with linux's refusal to implement proper POSIX thread-vs-process semantics. my motivations are: 1. it's cleaner this way, especially cleaner to optimize out the rsyscall locking overhead from pthread_create when it's not needed. 2. it's expected that only a tiny number of core system programs will ever use set*id() functions, whereas many programs may want to use threads, and making thread overhead tiny is an incentive for "light" programs to try threads.
Diffstat (limited to 'src/unistd')
-rw-r--r--src/unistd/setgid.c3
-rw-r--r--src/unistd/setregid.c3
-rw-r--r--src/unistd/setresgid.c3
-rw-r--r--src/unistd/setresuid.c3
-rw-r--r--src/unistd/setreuid.c3
-rw-r--r--src/unistd/setuid.c3
6 files changed, 6 insertions, 12 deletions
diff --git a/src/unistd/setgid.c b/src/unistd/setgid.c
index e98a2982..b54d2b22 100644
--- a/src/unistd/setgid.c
+++ b/src/unistd/setgid.c
@@ -4,6 +4,5 @@
int setgid(gid_t gid)
{
- if (libc.rsyscall) return libc.rsyscall(__NR_setgid, gid, 0, 0, 0, 0, 0);
- return syscall(SYS_setgid, gid);
+ return __rsyscall(__NR_setgid, gid, 0, 0, 0, 0, 0);
}
diff --git a/src/unistd/setregid.c b/src/unistd/setregid.c
index ff2607dc..49c59858 100644
--- a/src/unistd/setregid.c
+++ b/src/unistd/setregid.c
@@ -4,6 +4,5 @@
int setregid(gid_t rgid, gid_t egid)
{
- if (libc.rsyscall) return libc.rsyscall(__NR_setregid, rgid, egid, 0, 0, 0, 0);
- return syscall(SYS_setregid, rgid, egid);
+ return __rsyscall(__NR_setregid, rgid, egid, 0, 0, 0, 0);
}
diff --git a/src/unistd/setresgid.c b/src/unistd/setresgid.c
index 3c85a828..2b0c96d8 100644
--- a/src/unistd/setresgid.c
+++ b/src/unistd/setresgid.c
@@ -5,6 +5,5 @@
int setresgid(gid_t rgid, gid_t egid, gid_t sgid)
{
- if (libc.rsyscall) return libc.rsyscall(__NR_setresgid, rgid, egid, sgid, 0, 0, 0);
- return syscall(SYS_setresgid, rgid, egid, sgid);
+ return __rsyscall(__NR_setresgid, rgid, egid, sgid, 0, 0, 0);
}
diff --git a/src/unistd/setresuid.c b/src/unistd/setresuid.c
index 376ce406..7fa6bc38 100644
--- a/src/unistd/setresuid.c
+++ b/src/unistd/setresuid.c
@@ -5,6 +5,5 @@
int setresuid(uid_t ruid, uid_t euid, uid_t suid)
{
- if (libc.rsyscall) return libc.rsyscall(__NR_setresuid, ruid, euid, suid, 0, 0, 0);
- return syscall(SYS_setresuid, ruid, euid, suid);
+ return __rsyscall(__NR_setresuid, ruid, euid, suid, 0, 0, 0);
}
diff --git a/src/unistd/setreuid.c b/src/unistd/setreuid.c
index 505e8bc1..d926454a 100644
--- a/src/unistd/setreuid.c
+++ b/src/unistd/setreuid.c
@@ -4,6 +4,5 @@
int setreuid(uid_t ruid, uid_t euid)
{
- if (libc.rsyscall) return libc.rsyscall(__NR_setreuid, ruid, euid, 0, 0, 0, 0);
- return syscall(SYS_setreuid, ruid, euid);
+ return __rsyscall(__NR_setreuid, ruid, euid, 0, 0, 0, 0);
}
diff --git a/src/unistd/setuid.c b/src/unistd/setuid.c
index 61e8be55..da6816de 100644
--- a/src/unistd/setuid.c
+++ b/src/unistd/setuid.c
@@ -4,6 +4,5 @@
int setuid(uid_t uid)
{
- if (libc.rsyscall) return libc.rsyscall(__NR_setuid, uid, 0, 0, 0, 0, 0);
- return syscall(SYS_setuid, uid);
+ return __rsyscall(__NR_setuid, uid, 0, 0, 0, 0, 0);
}