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CC = gcc | ||
BIN = restartable | ||
CFLAGS = -Wall -O2 | ||
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$(BIN): *.c | ||
$(CC) -o $@ $(CFLAGS) *.c $(LDFLAGS) | ||
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clean: | ||
@rm -f $(BIN) |
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#include <sys/types.h> | ||
#include <ctype.h> | ||
#include <err.h> | ||
#include <fcntl.h> | ||
#include <dirent.h> | ||
#include <limits.h> | ||
#include <paths.h> | ||
#include <pwd.h> | ||
#include <stdio.h> | ||
#include <string.h> | ||
#include <unistd.h> | ||
#define _KERNEL | ||
#include <sys/procfs.h> | ||
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static int verbose; | ||
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static void | ||
parse_psinfo(const char *pid, int procFd) { | ||
struct passwd *pwd; | ||
char *user = "-"; | ||
psinfo_t psinfo; | ||
int fd; | ||
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if ((fd = openat(procFd, "psinfo", O_RDONLY)) == -1) { | ||
warn("%s", pid); | ||
return; | ||
} | ||
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if (read(fd, &psinfo, sizeof(psinfo_t)) == sizeof(psinfo_t)) { | ||
if ((pwd = getpwuid(psinfo.pr_uid)) != NULL) | ||
user = pwd->pw_name; | ||
printf("%d\t%d\t%d\t%s\t%s\n", psinfo.pr_pid, psinfo.pr_ppid, psinfo.pr_uid, user, psinfo.pr_fname); | ||
if (verbose) | ||
printf("\t%s\n", psinfo.pr_psargs); | ||
} | ||
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(void) close(fd); | ||
} | ||
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static void | ||
print_proc(const char *pid) { | ||
char linkPath[PATH_MAX]; | ||
char link[PATH_MAX]; | ||
char procPid[256]; | ||
int procFd, mapFd; | ||
prmap_t entry; | ||
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(void) snprintf(procPid, sizeof(procPid), "/proc/%s", pid); | ||
if ((procFd = open(procPid, O_RDONLY | O_DIRECTORY)) == -1) | ||
return; | ||
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if ((mapFd = openat(procFd, "map", O_RDONLY)) == -1) { | ||
warn("%s", pid); | ||
close(procFd); | ||
return; | ||
} | ||
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while (read(mapFd, &entry, sizeof(entry)) == sizeof(entry)) { | ||
/* Skip anonymous mappings */ | ||
if (entry.pr_mflags & MA_ANON) | ||
continue; | ||
/* Skip non-executable mappings */ | ||
if (!(entry.pr_mflags & MA_EXEC)) | ||
continue; | ||
/* Solaris doesn't have w^x, so skip writable to avoid duplicate entries */ | ||
if (entry.pr_mflags & MA_WRITE) | ||
continue; | ||
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(void) snprintf(linkPath, sizeof(linkPath), "path/%s", entry.pr_mapname); | ||
if (readlinkat(procFd, linkPath, link, sizeof(link)) == -1) { | ||
parse_psinfo(pid, procFd); | ||
break; | ||
} | ||
} | ||
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(void) close(mapFd); | ||
(void) close(procFd); | ||
} | ||
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static void | ||
print_all(void) { | ||
DIR *dir; | ||
struct dirent *entry; | ||
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dir = opendir("/proc"); | ||
if (dir == NULL) | ||
err(1, "/proc"); | ||
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while ((entry = readdir(dir)) != NULL) | ||
if (isdigit(entry->d_name[0])) | ||
print_proc(entry->d_name); | ||
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(void) closedir(dir); | ||
} | ||
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int | ||
main(int argc, char *argv[]) { | ||
if (argc > 2) | ||
errx(1, "Usage: %s [-v]\n", argv[0]); | ||
if (argc > 1 && !strcmp(argv[1], "-v")) | ||
verbose = 1; | ||
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printf("PID\tPPID\tUID\tUser\tCommand\n"); | ||
print_all(); | ||
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return 0; | ||
} |