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fdinfo: Print the application current working directory.

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Would have helped immensely with diagnosing #19684.
This commit is contained in:
Augustin Cavalier
2025-07-15 18:02:21 -04:00
parent bdda979744
commit 9626cf86ec
1 changed files with 42 additions and 10 deletions
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src/bin/fdinfo.cpp
+42 -10
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@@ -10,8 +10,11 @@
#include <OS.h>
#include <fs_info.h>
#include <extended_system_info.h>
#include <extended_system_info_defs.h>
#include <syscalls.h>
#include <vfs_defs.h>
#include <util/KMessage.h>
#include <ctype.h>
#include <errno.h>
@@ -29,7 +32,7 @@ enum info_mode {
extern const char *__progname;
const char *
static const char *
open_mode_to_string(int openMode)
{
switch (openMode & O_RWMASK) {
@@ -43,15 +46,45 @@ open_mode_to_string(int openMode)
}
static status_t
get_next_fd_info(team_id teamID, int32* cookie, fd_info* info)
{
while (*cookie < 0) {
*cookie = 0;
// Fetch CWD before regular FDs.
KMessage teamInfo;
status_t error = get_extended_team_info(teamID, B_TEAM_INFO_BASIC, teamInfo);
if (error != B_OK)
break;
int32 cwdDevice = 0;
int64 cwdDirectory = 0;
if (teamInfo.FindInt32("cwd device", &cwdDevice) != B_OK
|| teamInfo.FindInt64("cwd directory", &cwdDirectory) != B_OK) {
break;
}
info->number = AT_FDCWD;
info->device = cwdDevice;
info->node = cwdDirectory;
info->open_mode = 0;
return B_OK;
}
return _kern_get_next_fd_info(teamID, (uint32*)cookie, info, sizeof(fd_info));
}
void
print_fds(team_info &teamInfo)
{
printf("Team: (%" B_PRId32 ") %s\n", teamInfo.team, teamInfo.args);
uint32 cookie = 0;
int32 cookie = -1;
fd_info info;
while (_kern_get_next_fd_info(teamInfo.team, &cookie, &info, sizeof(fd_info)) == B_OK) {
while (get_next_fd_info(teamInfo.team, &cookie, &info) == B_OK) {
printf("%5d %s %" B_PRIdDEV ":%" B_PRIdINO "\n", info.number,
open_mode_to_string(info.open_mode), info.device, info.node);
}
@@ -61,10 +94,10 @@ print_fds(team_info &teamInfo)
void
filter_device(team_info &teamInfo, dev_t device, bool brief)
{
uint32 cookie = 0;
int32 cookie = -1;
fd_info info;
while (_kern_get_next_fd_info(teamInfo.team, &cookie, &info, sizeof(fd_info)) == B_OK) {
while (get_next_fd_info(teamInfo.team, &cookie, &info) == B_OK) {
if (info.device != device)
continue;
@@ -73,7 +106,7 @@ filter_device(team_info &teamInfo, dev_t device, bool brief)
break;
}
printf("%5" B_PRId32 " %3d %3s %" B_PRIdDEV ":%" B_PRIdINO " %s\n",
printf("%5" B_PRId32 " %4d %3s %" B_PRIdDEV ":%" B_PRIdINO " %s\n",
teamInfo.team, info.number, open_mode_to_string(info.open_mode),
info.device, info.node, teamInfo.args);
}
@@ -83,10 +116,10 @@ filter_device(team_info &teamInfo, dev_t device, bool brief)
void
filter_file(team_info &teamInfo, dev_t device, ino_t node, bool brief)
{
uint32 cookie = 0;
int32 cookie = -1;
fd_info info;
while (_kern_get_next_fd_info(teamInfo.team, &cookie, &info, sizeof(fd_info)) == B_OK) {
while (get_next_fd_info(teamInfo.team, &cookie, &info) == B_OK) {
if (info.device != device || info.node != node)
continue;
@@ -95,7 +128,7 @@ filter_file(team_info &teamInfo, dev_t device, ino_t node, bool brief)
break;
}
printf("%5" B_PRId32 " %3d %3s %s\n", teamInfo.team, info.number,
printf("%5" B_PRId32 " %4d %3s %s\n", teamInfo.team, info.number,
open_mode_to_string(info.open_mode), teamInfo.args);
}
}
@@ -190,4 +223,3 @@ main(int argc, char **argv)
return 0;
}