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refactor: Break proc API functions out of the main daemon source

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Signed-off-by: Kai Krakow <kai@kaishome.de>
This commit is contained in:
Kai Krakow
2018-10-08 20:29:12 +02:00
parent c4ff3d7250
commit 748808be7e
4 changed files with 78 additions and 14 deletions
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19
daemon/gamemode.c
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@@ -41,7 +41,6 @@ POSSIBILITY OF SUCH DAMAGE.
#include <ctype.h>
#include <fcntl.h>
#include <linux/limits.h>
#include <linux/sched.h>
#include <pthread.h>
#include <pwd.h>
@@ -50,7 +49,6 @@ POSSIBILITY OF SUCH DAMAGE.
#include <stdatomic.h>
#include <sys/resource.h>
#include <sys/sysinfo.h>
#include <sys/types.h>
#include <systemd/sd-daemon.h>
/* SCHED_ISO may not be defined as it is a reserved value not yet
@@ -725,7 +723,7 @@ GameModeContext *game_mode_context_instance()
* Lookup the process environment for a specific variable or return NULL.
* Requires an open directory FD from /proc/PID.
*/
static char *game_mode_lookup_proc_env(int proc_fd, const char *var)
static char *game_mode_lookup_proc_env(const procfd_t proc_fd, const char *var)
{
char *environ = NULL;
@@ -785,18 +783,11 @@ static char *game_mode_resolve_wine_preloader(pid_t pid)
{
char buffer[PATH_MAX];
char *proc_path = NULL, *wine_exe = NULL, *wineprefix = NULL;
int proc_fd = -1;
/* We could use the buffered_snprintf() helper here but it may potentially
* overwrite proc_path when the buffer is re-used later and usage of
* proc_path has not been discarded yet (i.e., it's used in the fail path).
* Let's not introduce this non-obvious pitfall.
*/
if (!(proc_path = safe_snprintf(buffer, "/proc/%d", pid)))
goto fail;
/* Open the directory, we are potentially reading multiple files from it */
if (-1 == (proc_fd = open(proc_path, O_RDONLY | O_CLOEXEC)))
procfd_t proc_fd = game_mode_open_proc(pid);
if (proc_fd == INVALID_PROCFD)
goto fail_proc;
/* Open the command line */
@@ -868,7 +859,7 @@ static char *game_mode_resolve_wine_preloader(pid_t pid)
goto fail;
error_cleanup:
close(proc_fd);
game_mode_close_proc(proc_fd);
free(wineprefix);
free(proc_path);
return wine_exe;