summaryrefslogtreecommitdiffstats
path: root/winsup/cygwin/fhandler_process.cc
diff options
context:
space:
mode:
Diffstat (limited to 'winsup/cygwin/fhandler_process.cc')
-rw-r--r--winsup/cygwin/fhandler_process.cc170
1 files changed, 151 insertions, 19 deletions
diff --git a/winsup/cygwin/fhandler_process.cc b/winsup/cygwin/fhandler_process.cc
index 3c996d067..4a14bca56 100644
--- a/winsup/cygwin/fhandler_process.cc
+++ b/winsup/cygwin/fhandler_process.cc
@@ -25,30 +25,37 @@ details. */
#include <sys/param.h>
#include <assert.h>
#include <sys/sysmacros.h>
+#include <psapi.h>
#define _COMPILING_NEWLIB
#include <dirent.h>
static const int PROCESS_PPID = 2;
-static const int PROCESS_EXENAME = 3;
-static const int PROCESS_WINPID = 4;
-static const int PROCESS_WINEXENAME = 5;
-static const int PROCESS_STATUS = 6;
-static const int PROCESS_UID = 7;
-static const int PROCESS_GID = 8;
-static const int PROCESS_PGID = 9;
-static const int PROCESS_SID = 10;
-static const int PROCESS_CTTY = 11;
-static const int PROCESS_STAT = 12;
-static const int PROCESS_STATM = 13;
-static const int PROCESS_CMDLINE = 14;
+static const int PROCESS_WINPID = 3;
+static const int PROCESS_WINEXENAME = 4;
+static const int PROCESS_STATUS = 5;
+static const int PROCESS_UID = 6;
+static const int PROCESS_GID = 7;
+static const int PROCESS_PGID = 8;
+static const int PROCESS_SID = 9;
+static const int PROCESS_CTTY = 10;
+static const int PROCESS_STAT = 11;
+static const int PROCESS_STATM = 12;
+static const int PROCESS_CMDLINE = 13;
+static const int PROCESS_MAPS = 14;
+/* Keep symlinks always the last entries. */
+static const int PROCESS_ROOT = 15;
+static const int PROCESS_EXE = 16;
+static const int PROCESS_CWD = 17;
+
+/* The position of "root" defines the beginning of symlik entries. */
+#define is_symlink(nr) ((nr) >= PROCESS_ROOT)
static const char * const process_listing[] =
{
".",
"..",
"ppid",
- "exename",
"winpid",
"winexename",
"status",
@@ -60,12 +67,18 @@ static const char * const process_listing[] =
"stat",
"statm",
"cmdline",
+ "maps",
+ /* Keep symlinks always the last entries. */
+ "root",
+ "exe",
+ "cwd",
NULL
};
static const int PROCESS_LINK_COUNT =
(sizeof (process_listing) / sizeof (const char *)) - 1;
+static _off64_t format_process_maps (_pinfo *p, char *destbuf, size_t maxsize);
static _off64_t format_process_stat (_pinfo *p, char *destbuf, size_t maxsize);
static _off64_t format_process_status (_pinfo *p, char *destbuf, size_t maxsize);
static _off64_t format_process_statm (_pinfo *p, char *destbuf, size_t maxsize);
@@ -91,7 +104,10 @@ fhandler_process::exists ()
for (int i = 0; process_listing[i]; i++)
if (pathmatch (path + 1, process_listing[i]))
- return -1;
+ {
+ fileid = i;
+ return is_symlink (i) ? -2 : -1;
+ }
return 0;
}
@@ -137,8 +153,13 @@ fhandler_process::fstat (struct __stat64 *buf)
buf->st_mode |= S_IFDIR | S_IXUSR | S_IXGRP | S_IXOTH;
buf->st_nlink = PROCESS_LINK_COUNT;
return 0;
- default:
+ case -2:
+ buf->st_uid = p->uid;
+ buf->st_gid = p->gid;
+ buf->st_mode = S_IFLNK | S_IRWXU | S_IRWXG | S_IRWXO;
+ return 0;
case -1:
+ default:
buf->st_uid = p->uid;
buf->st_gid = p->gid;
buf->st_mode |= S_IFREG | S_IRUSR | S_IRGRP | S_IROTH;
@@ -251,6 +272,15 @@ out:
bool
fhandler_process::fill_filebuf ()
{
+ if (!pid)
+ {
+ const char *path;
+ path = get_name () + proc_len + 1;
+ if (path_prefix_p ("self", path, 4))
+ pid = getpid ();
+ else
+ pid = atoi (path);
+ }
pinfo p (pid);
if (!p)
@@ -298,12 +328,25 @@ fhandler_process::fill_filebuf ()
filesize = strlen (filebuf);
break;
}
+ case PROCESS_ROOT:
+ case PROCESS_CWD:
case PROCESS_CMDLINE:
{
- if (filebuf)
+ if (filebuf)
free (filebuf);
- size_t fs;
- filebuf = p->cmdline (fs);
+ size_t fs;
+ switch (fileid)
+ {
+ case PROCESS_ROOT:
+ filebuf = p->root (fs);
+ break;
+ case PROCESS_CWD:
+ filebuf = p->cwd (fs);
+ break;
+ case PROCESS_CMDLINE:
+ filebuf = p->cmdline (fs);
+ break;
+ }
filesize = fs;
if (!filebuf || !*filebuf)
{
@@ -312,7 +355,7 @@ fhandler_process::fill_filebuf ()
}
break;
}
- case PROCESS_EXENAME:
+ case PROCESS_EXE:
{
filebuf = (char *) realloc (filebuf, bufalloc = CYG_MAX_PATH);
if (p->process_state & PID_EXITED)
@@ -365,12 +408,101 @@ fhandler_process::fill_filebuf ()
filesize = format_process_statm (*p, filebuf, bufalloc);
break;
}
+ case PROCESS_MAPS:
+ {
+ filebuf = (char *) realloc (filebuf, bufalloc = 2048);
+ filesize = format_process_maps (*p, filebuf, bufalloc);
+ break;
+ }
}
return true;
}
static _off64_t
+format_process_maps (_pinfo *p, char *destbuf, size_t maxsize)
+{
+ if (!wincap.is_winnt ())
+ return 0;
+
+ HANDLE proc = OpenProcess (PROCESS_QUERY_INFORMATION | PROCESS_VM_READ,
+ FALSE,
+ p->dwProcessId);
+ if (!proc)
+ return 0;
+
+ _off64_t len = 0;
+ HMODULE *modules;
+ DWORD needed, i;
+ DWORD_PTR wset_size;
+ DWORD_PTR *workingset = NULL;
+ MODULEINFO info;
+ char modname[CYG_MAX_PATH + 1];
+ char posix_modname[CYG_MAX_PATH + 1];
+
+ if (!EnumProcessModules (proc, NULL, 0, &needed))
+ {
+ __seterrno ();
+ len = -1;
+ goto out;
+ }
+ modules = (HMODULE*) alloca (needed);
+ if (!EnumProcessModules (proc, modules, needed, &needed))
+ {
+ __seterrno ();
+ len = -1;
+ goto out;
+ }
+
+ QueryWorkingSet (proc, (void *) &wset_size, sizeof wset_size);
+ if (GetLastError () == ERROR_BAD_LENGTH)
+ {
+ workingset = (DWORD_PTR *) alloca (sizeof (DWORD_PTR) * ++wset_size);
+ if (!QueryWorkingSet (proc, (void *) workingset,
+ sizeof (DWORD_PTR) * wset_size))
+ workingset = NULL;
+ }
+ for (i = 0; i < needed / sizeof (HMODULE); i++)
+ if (GetModuleInformation (proc, modules[i], &info, sizeof info)
+ && GetModuleFileNameEx (proc, modules[i], modname, sizeof modname))
+ {
+ char access[5];
+ strcpy (access, "r--p");
+ cygwin_conv_to_full_posix_path (modname, posix_modname);
+ if (len + strlen (posix_modname) + 50 > maxsize - 1)
+ break;
+ if (workingset)
+ for (unsigned i = 1; i <= wset_size; ++i)
+ {
+ DWORD_PTR addr = workingset[i] & 0xfffff000UL;
+ if ((char *)addr >= info.lpBaseOfDll
+ && (char *)addr < (char *)info.lpBaseOfDll + info.SizeOfImage)
+ {
+ access[0] = (workingset[i] & 0x5) ? 'r' : '-';
+ access[1] = (workingset[i] & 0x4) ? 'w' : '-';
+ access[2] = (workingset[i] & 0x2) ? 'x' : '-';
+ access[3] = (workingset[i] & 0x100) ? 's' : 'p';
+ }
+ }
+ int written = __small_sprintf (destbuf + len,
+ "%08lx-%08lx %s %08lx 00:00 %lu ",
+ info.lpBaseOfDll,
+ (unsigned long)info.lpBaseOfDll
+ + info.SizeOfImage,
+ access,
+ info.EntryPoint,
+ info.SizeOfImage);
+ while (written++ < 49)
+ destbuf[len + written] = ' ';
+ len += written;
+ len += __small_sprintf (destbuf + len, "%s\n", posix_modname);
+ }
+out:
+ CloseHandle (proc);
+ return len;
+}
+
+static _off64_t
format_process_stat (_pinfo *p, char *destbuf, size_t maxsize)
{
char cmd[CYG_MAX_PATH];
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-30 12:39:08 +0000