#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#include <sched.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <sys/resource.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>

#include "proc.h"
#include "die.h"

void cpu_affinity(int cpu)
{
	int ret;
	cpu_set_t cpu_bitmask;

	CPU_ZERO(&cpu_bitmask);
	CPU_SET(cpu, &cpu_bitmask);

	ret = sched_setaffinity(getpid(), sizeof(cpu_bitmask),
				&cpu_bitmask);
	if (ret)
		panic("Can't set this cpu affinity!\n");
}

int set_proc_prio(int priority)
{
	int ret = setpriority(PRIO_PROCESS, getpid(), priority);
	if (ret)
		panic("Can't set nice val to %i!\n", priority);

	return 0;
}

int set_sched_status(int policy, int priority)
{
	int ret, min_prio, max_prio;
	struct sched_param sp;

	max_prio = sched_get_priority_max(policy);
	min_prio = sched_get_priority_min(policy);

	if (max_prio == -1 || min_prio == -1)
		printf("Cannot determine scheduler prio limits!\n");
	else if (priority < min_prio)
		priority = min_prio;
	else if (priority > max_prio)
		priority = max_prio;

	memset(&sp, 0, sizeof(sp));
	sp.sched_priority = priority;

	ret = sched_setscheduler(getpid(), policy, &sp);
	if (ret) {
		printf("Cannot set scheduler policy!\n");
		return -EINVAL;
	}

	ret = sched_setparam(getpid(), &sp);
	if (ret) {
		printf("Cannot set scheduler prio!\n");
		return -EINVAL;
	}

	return 0;
}

ssize_t proc_get_cmdline(unsigned int pid, char *cmdline, size_t len)
{
	ssize_t ret;
	char path[1024];

	snprintf(path, sizeof(path), "/proc/%u/exe", pid);
	ret = readlink(path, cmdline, len - 1);
	if (ret < 0)
		cmdline[0] = '\0';
	else
		cmdline[ret] = '\0';

	return ret;
}

int proc_exec(const char *proc, char *const argv[])
{
	int status;
	pid_t pid;

	pid = fork();
	if (pid < 0) {
		perror("fork");
		return -1;
	} else if (pid == 0) {
		if (execvp(proc, argv) < 0)
			fprintf(stderr, "Failed to exec: %s\n", proc);
		_exit(1);
	}

	if (waitpid(pid, &status, 0) < 0) {
		perror("waitpid");
		return -2;
	}

	if (!WIFEXITED(status))
		return -WEXITSTATUS(status);

	return 0;
}
t/net/ipv4/proc.c?h=nds-private-remove&amp;id=52f5631a4c056ad01682393be56d2be237e81610'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/net/ipv4/proc.c?h=nds-private-remove&amp;id=52f5631a4c056ad01682393be56d2be237e81610'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/ipv4/proc.c'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=52f5631a4c056ad01682393be56d2be237e81610'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?h=nds-private-remove&amp;id=52f5631a4c056ad01682393be56d2be237e81610'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/ipv4?h=nds-private-remove&amp;id=52f5631a4c056ad01682393be56d2be237e81610'>ipv4</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/ipv4/proc.c?h=nds-private-remove&amp;id=52f5631a4c056ad01682393be56d2be237e81610'>proc.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='52f5631a4c056ad01682393be56d2be237e81610'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Jurij Smakov &lt;jurij@wooyd.org&gt;</td><td class='right'>2017-01-30 15:41:36 -0600</td></tr>
<tr><th>committer</th><td>Kalle Valo &lt;kvalo@codeaurora.org&gt;</td><td class='right'>2017-01-31 09:05:25 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ipv4/proc.c?h=nds-private-remove&amp;id=52f5631a4c056ad01682393be56d2be237e81610'>52f5631a4c056ad01682393be56d2be237e81610</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/ipv4/proc.c?id=52f5631a4c056ad01682393be56d2be237e81610'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=52f5631a4c056ad01682393be56d2be237e81610'>53d1ddd2c1b179c808df10b6ce731ad26aa9f31b</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/ipv4/proc.c?h=nds-private-remove&amp;id=52f5631a4c056ad01682393be56d2be237e81610'>net/ipv4/proc.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ipv4/proc.c?h=nds-private-remove&amp;id=2b1d530cb3157f828fcaadd259613f59db3c6d1c'>2b1d530cb3157f828fcaadd259613f59db3c6d1c</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/ipv4/proc.c?h=nds-private-remove&amp;id=52f5631a4c056ad01682393be56d2be237e81610&amp;id2=2b1d530cb3157f828fcaadd259613f59db3c6d1c'>diff</a>)</td></tr></table>
<div class='commit-subject'>rtlwifi: rtl8192ce: Fix loading of incorrect firmware</div><div class='commit-msg'>In commit cf4747d7535a ("rtlwifi: Fix regression caused by commit
d86e64768859, an error in the edit results in the wrong firmware
being loaded for some models of the RTL8188/8192CE. In this condition,
the connection suffered from high ping latency, slow transfer rates,
 and required higher signal strengths to work at all

See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=853073,
https://bugzilla.opensuse.org/show_bug.cgi?id=1017471, and
https://github.com/lwfinger/rtlwifi_new/issues/203 for descriptions
of the problems. This patch fixes all of those problems.

Fixes: cf4747d7535a ("rtlwifi: Fix regression caused by commit d86e64768859")
Signed-off-by: Jurij Smakov &lt;jurij@wooyd.org&gt;
Signed-off-by: Larry Finger &lt;Larry.Finger@lwfinger.net&gt;
Cc: Stable &lt;stable@vger.kernel.org&gt; # 4.9+
Signed-off-by: Kalle Valo &lt;kvalo@codeaurora.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=52f5631a4c056ad01682393be56d2be237e81610'>Diffstat</a> (limited to 'net/ipv4/proc.c')</div><table summary='diffstat' class='diffstat'>