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Add logging to Linux Host::GetProcessAndStatInfo.

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llvm-svn: 275198
This commit is contained in:
Oleksiy Vyalov
2016-07-12 18:14:27 +00:00
parent 5b2636a152
commit 9d90186d8c
1 changed files with 16 additions and 4 deletions
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20
lldb/source/Host/linux/Host.cpp
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@@ -8,12 +8,14 @@
//===----------------------------------------------------------------------===//
// C Includes
#include <stdio.h>
#include <sys/utsname.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/utsname.h>
// C++ Includes
// Other libraries and framework includes
@@ -291,15 +293,25 @@ GetProcessAndStatInfo (lldb::pid_t pid, ProcessInstanceInfo &process_info, Proce
::memset (&stat_info, 0, sizeof(stat_info));
stat_info.ppid = LLDB_INVALID_PROCESS_ID;
Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
// Use special code here because proc/[pid]/exe is a symbolic link.
char link_path[PATH_MAX];
char exe_path[PATH_MAX] = "";
if (snprintf (link_path, PATH_MAX, "/proc/%" PRIu64 "/exe", pid) <= 0)
{
if (log)
log->Printf("%s: failed to sprintf pid %" PRIu64, __FUNCTION__, pid);
return false;
}
ssize_t len = readlink (link_path, exe_path, sizeof(exe_path) - 1);
if (len <= 0)
{
if (log)
log->Printf("%s: failed to read link %s: %s", __FUNCTION__, link_path, strerror(errno));
return false;
}
// readlink does not append a null byte.
exe_path[len] = 0;