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add field for kvm descriptor.

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* glibtop_machine.h: add field for kvm descriptor.

        * open.c: add code for opening kernel name space.

        * shm_limits.c: implemented.

The real implementation will have this code in the daemon, since process
needs to be setgid sys to be able to read kernel symbols.
This commit is contained in:
Drazen Kacar
1999-04-29 20:42:17 +00:00
parent a567adcce5
commit 2868191440
4 changed files with 42 additions and 2 deletions
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8
sysdeps/solaris/ChangeLog
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@@ -1,3 +1,11 @@
1999-04-29 Drazen Kacar <dave@srce.hr>
* glibtop_machine.h: add field for kvm descriptor.
* open.c: add code for opening kernel name space.
* shm_limits.c: implemented.
1999-03-31 Drazen Kacar <dave@srce.hr> 1999-03-31 Drazen Kacar <dave@srce.hr>
* loadavg.c: make it work with Solaris 2.6 and older. A part * loadavg.c: make it work with Solaris 2.6 and older. A part

3
sysdeps/solaris/glibtop_machine.h
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@@ -29,6 +29,7 @@
#include <fcntl.h> #include <fcntl.h>
#include <kstat.h> #include <kstat.h>
#include <kvm.h>
#include <sys/sysinfo.h> #include <sys/sysinfo.h>
BEGIN_LIBGTOP_DECLS BEGIN_LIBGTOP_DECLS
@@ -40,6 +41,8 @@ struct _glibtop_machine
uid_t uid, euid; uid_t uid, euid;
gid_t gid, egid; gid_t gid, egid;
kvm_t *kd;
kstat_ctl_t *kc; kstat_ctl_t *kc;
kstat_t *vminfo_kstat; kstat_t *vminfo_kstat;

4
sysdeps/solaris/open.c
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@@ -60,6 +60,10 @@ glibtop_open_s (glibtop *server, const char *program_name,
if (!server->machine.kc) if (!server->machine.kc)
glibtop_error_io_r (server, "kstat_open ()"); glibtop_error_io_r (server, "kstat_open ()");
server->machine.kd = kvm_open(NULL, NULL, NULL, O_RDONLY, NULL);
if(!server->machine.kd)
glibtop_warn_io_r(server, "kvm_open()");
fprintf (stderr, "Sleeping 2 seconds, please wait ...\n"); fprintf (stderr, "Sleeping 2 seconds, please wait ...\n");
sleep (2); sleep (2);
} }

29
sysdeps/solaris/shm_limits.c
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@@ -24,14 +24,25 @@
#include <glibtop.h> #include <glibtop.h>
#include <glibtop/shm_limits.h> #include <glibtop/shm_limits.h>
static const unsigned long _glibtop_sysdeps_shm_limits = 0; #include <kvm.h>
#include <sys/shm.h>
static struct nlist nlst[] = { {"shminfo"}, {NULL} };
static const unsigned long _glibtop_sysdeps_shm_limits =
(1L << GLIBTOP_IPC_SHMMAX) + (1L << GLIBTOP_IPC_SHMMIN) +
(1L << GLIBTOP_IPC_SHMMNI) + (1L << GLIBTOP_IPC_SHMSEG);
/* Init function. */ /* Init function. */
void void
glibtop_init_shm_limits_s (glibtop *server) glibtop_init_shm_limits_s (glibtop *server)
{ {
server->sysdeps.shm_limits = _glibtop_sysdeps_shm_limits; kvm_t *kd = server->machine.kd;
if(kd && !kvm_nlist(kd, nlst))
server->sysdeps.shm_limits = _glibtop_sysdeps_shm_limits;
else
server->sysdeps.shm_limits = 0;
} }
/* Provides information about sysv ipc limits. */ /* Provides information about sysv ipc limits. */
@@ -39,5 +50,19 @@ glibtop_init_shm_limits_s (glibtop *server)
void void
glibtop_get_shm_limits_s (glibtop *server, glibtop_shm_limits *buf) glibtop_get_shm_limits_s (glibtop *server, glibtop_shm_limits *buf)
{ {
kvm_t *kd = server->machine.kd;
struct shminfo sinfo;
memset (buf, 0, sizeof (glibtop_shm_limits)); memset (buf, 0, sizeof (glibtop_shm_limits));
if(!(server->sysdeps.shm_limits))
return;
if(kvm_read(kd, nlst[0].n_value, (void *)&sinfo,
sizeof(struct shminfo)) != sizeof(struct shminfo))
return;
buf->shmmax = sinfo.shmmax;
buf->shmmin = sinfo.shmmin;
buf->shmmni = sinfo.shmmni;
buf->shmseg = sinfo.shmseg;
buf->flags = _glibtop_sysdeps_shm_limits;
} }