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author | rsc <devnull@localhost> | 2003-09-30 17:47:41 +0000 |
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committer | rsc <devnull@localhost> | 2003-09-30 17:47:41 +0000 |
commit | b2cfc4e2e71d0f0a5113ddfbd93c8285cc4d74e4 (patch) | |
tree | f382987fec33cf639d75b1fe1b5d76b8f155d074 /src/lib9/ffork-Linux.c | |
parent | 5f7d5e8d1899f41b0e5366c0251530ea1dc753d0 (diff) | |
download | plan9port-b2cfc4e2e71d0f0a5113ddfbd93c8285cc4d74e4.tar.gz plan9port-b2cfc4e2e71d0f0a5113ddfbd93c8285cc4d74e4.tar.bz2 plan9port-b2cfc4e2e71d0f0a5113ddfbd93c8285cc4d74e4.zip |
Initial revision
Diffstat (limited to 'src/lib9/ffork-Linux.c')
-rw-r--r-- | src/lib9/ffork-Linux.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/lib9/ffork-Linux.c b/src/lib9/ffork-Linux.c new file mode 100644 index 00000000..aad80041 --- /dev/null +++ b/src/lib9/ffork-Linux.c @@ -0,0 +1,39 @@ +#include <sched.h> +#include <signal.h> +#include <lib9.h> + +int fforkstacksize = 16384; + +int +ffork(int flags, void (*fn)(void*), void *arg) +{ + char *p; + int cloneflag, pid; + + p = malloc(fforkstacksize); + if(p == nil) + return -1; + cloneflag = 0; + flags &= ~RFPROC; + if(flags&RFMEM){ + cloneflag |= CLONE_VM; + flags &= ~RFMEM; + } + if(!(flags&RFFDG)) + cloneflag |= CLONE_FILES; + else + flags &= ~RFFDG; + if(!(flags&RFNOWAIT)) + cloneflag |= SIGCHLD; + else + flags &= ~RFNOWAIT; + if(flags){ + fprint(2, "unknown rfork flags %x\n", flags); + return -1; + } + pid = clone((int(*)(void*))fn, p+fforkstacksize-16, cloneflag, arg); + if(pid < 0) + free(p); + return pid; +} + |