Add getsid system call to bionic

Add getsid() system call to bionic for
all architectures. This is needed for various tools
(e.g. perf).

Adding the getsid system call was done in 3 steps:
() add getsid system call (function name and syscall
number) to libc/SYSCALLS.TXT
() generate all necessary headers by calling
libc/tools/gensyscalls.py. This patch is adding
the generated files since the build system
does not call gensyscalls.py.
() add the system call signature to libc/include/unistd.h

Change-Id: Id69a257e13ec02e1a44085a6b217a3f19ab025b1
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>

libc/SYSCALLS.TXT

@@ -62,6 +62,7 @@ int     getgroups:getgroups32(int, gid_t *)    205,205,-1
 int     getgroups:getgroups(int, gid_t *)      -1,-1,80
 pid_t   getpgid(pid_t)             132
 pid_t   getppid()                  64
+pid_t   getsid(pid_t)              147
 pid_t   setsid()                   66
 int     setgid:setgid32(gid_t)     214,214,-1
 int     setgid:setgid(gid_t)       -1,-1,46

libc/arch-arm/syscalls.mk

@@ -18,6 +18,7 @@ syscall_src += arch-arm/syscalls/readahead.S
 syscall_src += arch-arm/syscalls/getgroups.S
 syscall_src += arch-arm/syscalls/getpgid.S
 syscall_src += arch-arm/syscalls/getppid.S
+syscall_src += arch-arm/syscalls/getsid.S
 syscall_src += arch-arm/syscalls/setsid.S
 syscall_src += arch-arm/syscalls/setgid.S
 syscall_src += arch-arm/syscalls/__setreuid.S

libc/arch-arm/syscalls/getsid.S

@@ -0,0 +1,14 @@
+/* autogenerated by gensyscalls.py */
+#include <machine/asm.h>
+#include <sys/linux-syscalls.h>
+
+ENTRY(getsid)
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
+    ldr     r7, =__NR_getsid
+    swi     #0
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+END(getsid)

libc/arch-mips/syscalls.mk

@@ -19,6 +19,7 @@ syscall_src += arch-mips/syscalls/readahead.S
 syscall_src += arch-mips/syscalls/getgroups.S
 syscall_src += arch-mips/syscalls/getpgid.S
 syscall_src += arch-mips/syscalls/getppid.S
+syscall_src += arch-mips/syscalls/getsid.S
 syscall_src += arch-mips/syscalls/setsid.S
 syscall_src += arch-mips/syscalls/setgid.S
 syscall_src += arch-mips/syscalls/__setreuid.S

libc/arch-mips/syscalls/getsid.S

@@ -0,0 +1,22 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+    .text
+    .globl getsid
+    .align 4
+    .ent getsid
+
+getsid:
+    .set noreorder
+    .cpload $t9
+    li $v0, __NR_getsid
+    syscall
+    bnez $a3, 1f
+    move $a0, $v0
+    j $ra
+    nop
+1:
+    la $t9,__set_errno
+    j $t9
+    nop
+    .set reorder
+    .end getsid

libc/arch-x86/syscalls.mk

@@ -19,6 +19,7 @@ syscall_src += arch-x86/syscalls/readahead.S
 syscall_src += arch-x86/syscalls/getgroups.S
 syscall_src += arch-x86/syscalls/getpgid.S
 syscall_src += arch-x86/syscalls/getppid.S
+syscall_src += arch-x86/syscalls/getsid.S
 syscall_src += arch-x86/syscalls/setsid.S
 syscall_src += arch-x86/syscalls/setgid.S
 syscall_src += arch-x86/syscalls/__setreuid.S

libc/arch-x86/syscalls/getsid.S

@@ -0,0 +1,23 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+    .text
+    .type getsid, @function
+    .globl getsid
+    .align 4
+
+getsid:
+    pushl   %ebx
+    mov     8(%esp), %ebx
+    movl    $__NR_getsid, %eax
+    int     $0x80
+    cmpl    $-129, %eax
+    jb      1f
+    negl    %eax
+    pushl   %eax
+    call    __set_errno
+    addl    $4, %esp
+    orl     $-1, %eax
+1:
+    popl    %ebx
+    ret

libc/include/sys/linux-syscalls.h

@@ -83,6 +83,7 @@
 #define __NR_msync                        (__NR_SYSCALL_BASE + 144)
 #define __NR_readv                        (__NR_SYSCALL_BASE + 145)
 #define __NR_writev                       (__NR_SYSCALL_BASE + 146)
+#define __NR_getsid                       (__NR_SYSCALL_BASE + 147)
 #define __NR_perf_event_open              (__NR_SYSCALL_BASE + 364)
 
 #ifdef __arm__

libc/include/unistd.h

@@ -60,6 +60,7 @@ extern int    setpgid(pid_t, pid_t);
 extern pid_t  getppid(void);
 extern pid_t  getpgrp(void);
 extern int    setpgrp(void);
+extern pid_t  getsid(pid_t);
 extern pid_t  setsid(void);
 
 extern int execv(const char *, char * const *);
@@ -192,7 +193,6 @@ extern pid_t tcgetpgrp(int fd);
 extern int   tcsetpgrp(int fd, pid_t _pid);
 
 #if 0 /* MISSING FROM BIONIC */
-extern pid_t  getsid(pid_t);
 extern int execvpe(const char *, char * const *, char * const *);
 extern int execlpe(const char *, const char *, ...);
 extern int getfsuid(uid_t);