X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=gdb%2Fcommon%2Flinux-osdata.c;h=805850cbbc907a5bafd87134d80784453f200b23;hb=971dc0b89de28feaa5efade1f1f8675be223fabd;hp=a356bb86d36ff4de7802eaba34ec21c267037d5b;hpb=e5798bef38435b582d9fc1c51efbf36b2b7fbe20;p=platform%2Fupstream%2Fbinutils.git diff --git a/gdb/common/linux-osdata.c b/gdb/common/linux-osdata.c index a356bb8..805850c 100644 --- a/gdb/common/linux-osdata.c +++ b/gdb/common/linux-osdata.c @@ -1,6 +1,6 @@ /* Linux-specific functions to retrieve OS data. - Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc. + Copyright (C) 2009-2014 Free Software Foundation, Inc. This file is part of GDB. @@ -26,8 +26,7 @@ #include "linux-osdata.h" #include -#include -#include +#include #include #include #include @@ -43,14 +42,33 @@ #include "xml-utils.h" #include "buffer.h" #include "gdb_assert.h" -#include "gdb_dirent.h" +#include +#include +#include "filestuff.h" + +#define NAMELEN(dirent) strlen ((dirent)->d_name) + +/* Define PID_T to be a fixed size that is at least as large as pid_t, + so that reading pid values embedded in /proc works + consistently. */ + +typedef long long PID_T; + +/* Define TIME_T to be at least as large as time_t, so that reading + time values embedded in /proc works consistently. */ + +typedef long long TIME_T; + +#define MAX_PID_T_STRLEN (sizeof ("-9223372036854775808") - 1) + +/* Returns the CPU core that thread PTID is currently running on. */ + +/* Compute and return the processor core of a given thread. */ int linux_common_core_of_thread (ptid_t ptid) { - char filename[sizeof ("/proc//task//stat") - + 2 * 20 /* decimal digits for 2 numbers, max 2^64 bit each */ - + 1]; + char filename[sizeof ("/proc//task//stat") + 2 * MAX_PID_T_STRLEN]; FILE *f; char *content = NULL; char *p; @@ -59,9 +77,9 @@ linux_common_core_of_thread (ptid_t ptid) int i; int core; - sprintf (filename, "/proc/%d/task/%ld/stat", - ptid_get_pid (ptid), ptid_get_lwp (ptid)); - f = fopen (filename, "r"); + sprintf (filename, "/proc/%lld/task/%lld/stat", + (PID_T) ptid_get_pid (ptid), (PID_T) ptid_get_lwp (ptid)); + f = gdb_fopen_cloexec (filename, "r"); if (!f) return -1; @@ -102,11 +120,15 @@ linux_common_core_of_thread (ptid_t ptid) return core; } +/* Finds the command-line of process PID and copies it into COMMAND. + At most MAXLEN characters are copied. If the command-line cannot + be found, PID is copied into command in text-form. */ + static void -command_from_pid (char *command, int maxlen, pid_t pid) +command_from_pid (char *command, int maxlen, PID_T pid) { - char *stat_path = xstrprintf ("/proc/%d/stat", pid); - FILE *fp = fopen (stat_path, "r"); + char *stat_path = xstrprintf ("/proc/%lld/stat", pid); + FILE *fp = gdb_fopen_cloexec (stat_path, "r"); command[0] = '\0'; @@ -115,9 +137,9 @@ command_from_pid (char *command, int maxlen, pid_t pid) /* sizeof (cmd) should be greater or equal to TASK_COMM_LEN (in include/linux/sched.h in the Linux kernel sources) plus two (for the brackets). */ - char cmd[32]; - pid_t stat_pid; - int items_read = fscanf (fp, "%d %32s", &stat_pid, cmd); + char cmd[18]; + PID_T stat_pid; + int items_read = fscanf (fp, "%lld %17s", &stat_pid, cmd); if (items_read == 2 && pid == stat_pid) { @@ -130,7 +152,7 @@ command_from_pid (char *command, int maxlen, pid_t pid) else { /* Return the PID if a /proc entry for the process cannot be found. */ - snprintf (command, maxlen, "%d", pid); + snprintf (command, maxlen, "%lld", pid); } command[maxlen - 1] = '\0'; /* Ensure string is null-terminated. */ @@ -138,15 +160,15 @@ command_from_pid (char *command, int maxlen, pid_t pid) xfree (stat_path); } -/* Returns the command-line of the process with the given PID. The returned - string needs to be freed using xfree after use. */ +/* Returns the command-line of the process with the given PID. The + returned string needs to be freed using xfree after use. */ static char * -commandline_from_pid (pid_t pid) +commandline_from_pid (PID_T pid) { - char *pathname = xstrprintf ("/proc/%d/cmdline", pid); + char *pathname = xstrprintf ("/proc/%lld/cmdline", pid); char *commandline = NULL; - FILE *f = fopen (pathname, "r"); + FILE *f = gdb_fopen_cloexec (pathname, "r"); if (f) { @@ -180,7 +202,8 @@ commandline_from_pid (pid_t pid) } else { - /* Return the command in square brackets if the command-line is empty. */ + /* Return the command in square brackets if the command-line + is empty. */ commandline = (char *) xmalloc (32); commandline[0] = '['; command_from_pid (commandline + 1, 31, pid); @@ -196,6 +219,9 @@ commandline_from_pid (pid_t pid) return commandline; } +/* Finds the user name for the user UID and copies it into USER. At + most MAXLEN characters are copied. */ + static void user_from_uid (char *user, int maxlen, uid_t uid) { @@ -204,19 +230,23 @@ user_from_uid (char *user, int maxlen, uid_t uid) if (pwentry) { strncpy (user, pwentry->pw_name, maxlen); - user[maxlen - 1] = '\0'; /* Ensure that the user name is null-terminated. */ + /* Ensure that the user name is null-terminated. */ + user[maxlen - 1] = '\0'; } else user[0] = '\0'; } +/* Finds the owner of process PID and returns the user id in OWNER. + Returns 0 if the owner was found, -1 otherwise. */ + static int -get_process_owner (uid_t *owner, pid_t pid) +get_process_owner (uid_t *owner, PID_T pid) { struct stat statbuf; - char procentry[sizeof ("/proc/4294967295")]; + char procentry[sizeof ("/proc/") + MAX_PID_T_STRLEN]; - sprintf (procentry, "/proc/%d", pid); + sprintf (procentry, "/proc/%lld", pid); if (stat (procentry, &statbuf) == 0 && S_ISDIR (statbuf.st_mode)) { @@ -227,51 +257,34 @@ get_process_owner (uid_t *owner, pid_t pid) return -1; } -static int -get_number_of_cpu_cores (void) -{ - int cores = 0; - FILE *f = fopen ("/proc/cpuinfo", "r"); - - while (!feof (f)) - { - char buf[512]; - char *p = fgets (buf, sizeof (buf), f); - - if (p && strncmp (buf, "processor", 9) == 0) - ++cores; - } - - fclose (f); - - return cores; -} - -/* CORES points to an array of at least get_number_of_cpu_cores () elements. */ +/* Find the CPU cores used by process PID and return them in CORES. + CORES points to an array of at least sysconf(_SC_NPROCESSOR_ONLN) + elements. */ static int -get_cores_used_by_process (pid_t pid, int *cores) +get_cores_used_by_process (PID_T pid, int *cores) { - char taskdir[sizeof ("/proc/4294967295/task")]; + char taskdir[sizeof ("/proc/") + MAX_PID_T_STRLEN + sizeof ("/task") - 1]; DIR *dir; struct dirent *dp; int task_count = 0; - sprintf (taskdir, "/proc/%d/task", pid); + sprintf (taskdir, "/proc/%lld/task", pid); dir = opendir (taskdir); if (dir) { while ((dp = readdir (dir)) != NULL) { - pid_t tid; + PID_T tid; int core; if (!isdigit (dp->d_name[0]) - || NAMELEN (dp) > sizeof ("4294967295") - 1) + || NAMELEN (dp) > MAX_PID_T_STRLEN) continue; - tid = atoi (dp->d_name); - core = linux_common_core_of_thread (ptid_build (pid, tid, 0)); + sscanf (dp->d_name, "%lld", &tid); + core = linux_common_core_of_thread (ptid_build ((pid_t) pid, + (pid_t) tid, 0)); if (core >= 0) { @@ -288,7 +301,7 @@ get_cores_used_by_process (pid_t pid, int *cores) static LONGEST linux_xfer_osdata_processes (gdb_byte *readbuf, - ULONGEST offset, LONGEST len) + ULONGEST offset, ULONGEST len) { /* We make the process list snapshot when the object starts to be read. */ static const char *buf; @@ -309,12 +322,12 @@ linux_xfer_osdata_processes (gdb_byte *readbuf, dirp = opendir ("/proc"); if (dirp) { - const int num_cores = get_number_of_cpu_cores (); + const int num_cores = sysconf (_SC_NPROCESSORS_ONLN); struct dirent *dp; while ((dp = readdir (dirp)) != NULL) { - pid_t pid; + PID_T pid; uid_t owner; char user[UT_NAMESIZE]; char *command_line; @@ -324,10 +337,10 @@ linux_xfer_osdata_processes (gdb_byte *readbuf, int i; if (!isdigit (dp->d_name[0]) - || NAMELEN (dp) > sizeof ("4294967295") - 1) + || NAMELEN (dp) > MAX_PID_T_STRLEN) continue; - sscanf (dp->d_name, "%d", &pid); + sscanf (dp->d_name, "%lld", &pid); command_line = commandline_from_pid (pid); if (get_process_owner (&owner, pid) == 0) @@ -343,7 +356,7 @@ linux_xfer_osdata_processes (gdb_byte *readbuf, for (i = 0; i < num_cores && task_count > 0; ++i) if (cores[i]) { - char core_str[sizeof ("4294967205")]; + char core_str[sizeof ("4294967295")]; sprintf (core_str, "%d", i); strcat (cores_str, core_str); @@ -358,7 +371,7 @@ linux_xfer_osdata_processes (gdb_byte *readbuf, buffer_xml_printf ( &buffer, "" - "%d" + "%lld" "%s" "%s" "%s" @@ -396,9 +409,163 @@ linux_xfer_osdata_processes (gdb_byte *readbuf, return len; } +/* Auxiliary function used by qsort to sort processes by process + group. Compares two processes with ids PROCESS1 and PROCESS2. + PROCESS1 comes before PROCESS2 if it has a lower process group id. + If they belong to the same process group, PROCESS1 comes before + PROCESS2 if it has a lower process id or is the process group + leader. */ + +static int +compare_processes (const void *process1, const void *process2) +{ + PID_T pid1 = *((PID_T *) process1); + PID_T pid2 = *((PID_T *) process2); + PID_T pgid1 = *((PID_T *) process1 + 1); + PID_T pgid2 = *((PID_T *) process2 + 1); + + /* Sort by PGID. */ + if (pgid1 < pgid2) + return -1; + else if (pgid1 > pgid2) + return 1; + else + { + /* Process group leaders always come first, else sort by PID. */ + if (pid1 == pgid1) + return -1; + else if (pid2 == pgid2) + return 1; + else if (pid1 < pid2) + return -1; + else if (pid1 > pid2) + return 1; + else + return 0; + } +} + +/* Collect all process groups from /proc. */ + +static LONGEST +linux_xfer_osdata_processgroups (gdb_byte *readbuf, + ULONGEST offset, ULONGEST len) +{ + /* We make the process list snapshot when the object starts to be read. */ + static const char *buf; + static LONGEST len_avail = -1; + static struct buffer buffer; + + if (offset == 0) + { + DIR *dirp; + + if (len_avail != -1 && len_avail != 0) + buffer_free (&buffer); + len_avail = 0; + buf = NULL; + buffer_init (&buffer); + buffer_grow_str (&buffer, "\n"); + + dirp = opendir ("/proc"); + if (dirp) + { + struct dirent *dp; + const size_t list_block_size = 512; + PID_T *process_list = (PID_T *) xmalloc (list_block_size * 2 * sizeof (PID_T)); + size_t process_count = 0; + size_t i; + + /* Build list consisting of PIDs followed by their + associated PGID. */ + while ((dp = readdir (dirp)) != NULL) + { + PID_T pid, pgid; + + if (!isdigit (dp->d_name[0]) + || NAMELEN (dp) > MAX_PID_T_STRLEN) + continue; + + sscanf (dp->d_name, "%lld", &pid); + pgid = getpgid (pid); + + if (pgid > 0) + { + process_list[2 * process_count] = pid; + process_list[2 * process_count + 1] = pgid; + ++process_count; + + /* Increase the size of the list if necessary. */ + if (process_count % list_block_size == 0) + process_list = (PID_T *) xrealloc ( + process_list, + (process_count + list_block_size) + * 2 * sizeof (PID_T)); + } + } + + closedir (dirp); + + /* Sort the process list. */ + qsort (process_list, process_count, 2 * sizeof (PID_T), + compare_processes); + + for (i = 0; i < process_count; ++i) + { + PID_T pid = process_list[2 * i]; + PID_T pgid = process_list[2 * i + 1]; + char leader_command[32]; + char *command_line; + + command_from_pid (leader_command, sizeof (leader_command), pgid); + command_line = commandline_from_pid (pid); + + buffer_xml_printf ( + &buffer, + "" + "%lld" + "%s" + "%lld" + "%s" + "", + pgid, + leader_command, + pid, + command_line ? command_line : ""); + + xfree (command_line); + } + + xfree (process_list); + } + + buffer_grow_str0 (&buffer, "\n"); + buf = buffer_finish (&buffer); + len_avail = strlen (buf); + } + + if (offset >= len_avail) + { + /* Done. Get rid of the buffer. */ + buffer_free (&buffer); + buf = NULL; + len_avail = 0; + return 0; + } + + if (len > len_avail - offset) + len = len_avail - offset; + memcpy (readbuf, buf + offset, len); + + return len; +} + +/* Collect all the threads in /proc by iterating through processes and + then tasks within each process. */ + static LONGEST linux_xfer_osdata_threads (gdb_byte *readbuf, - ULONGEST offset, LONGEST len) + ULONGEST offset, ULONGEST len) { /* We make the process list snapshot when the object starts to be read. */ static const char *buf; @@ -436,7 +603,7 @@ linux_xfer_osdata_threads (gdb_byte *readbuf, { DIR *dirp2; char *pathname; - pid_t pid; + PID_T pid; char command[32]; pathname = xstrprintf ("/proc/%s/task", dp->d_name); @@ -452,7 +619,7 @@ linux_xfer_osdata_threads (gdb_byte *readbuf, while ((dp2 = readdir (dirp2)) != NULL) { - pid_t tid; + PID_T tid; int core; if (!isdigit (dp2->d_name[0]) @@ -465,9 +632,9 @@ linux_xfer_osdata_threads (gdb_byte *readbuf, buffer_xml_printf ( &buffer, "" - "%d" + "%lld" "%s" - "%d" + "%lld" "%d" "", pid, @@ -507,19 +674,900 @@ linux_xfer_osdata_threads (gdb_byte *readbuf, return len; } +/* Collect all the open file descriptors found in /proc and put the details + found about them into READBUF. */ + +static LONGEST +linux_xfer_osdata_fds (gdb_byte *readbuf, + ULONGEST offset, ULONGEST len) +{ + /* We make the process list snapshot when the object starts to be read. */ + static const char *buf; + static LONGEST len_avail = -1; + static struct buffer buffer; + + if (offset == 0) + { + DIR *dirp; + + if (len_avail != -1 && len_avail != 0) + buffer_free (&buffer); + len_avail = 0; + buf = NULL; + buffer_init (&buffer); + buffer_grow_str (&buffer, "\n"); + + dirp = opendir ("/proc"); + if (dirp) + { + struct dirent *dp; + + while ((dp = readdir (dirp)) != NULL) + { + struct stat statbuf; + char procentry[sizeof ("/proc/4294967295")]; + + if (!isdigit (dp->d_name[0]) + || NAMELEN (dp) > sizeof ("4294967295") - 1) + continue; + + sprintf (procentry, "/proc/%s", dp->d_name); + if (stat (procentry, &statbuf) == 0 + && S_ISDIR (statbuf.st_mode)) + { + char *pathname; + DIR *dirp2; + PID_T pid; + char command[32]; + + pid = atoi (dp->d_name); + command_from_pid (command, sizeof (command), pid); + + pathname = xstrprintf ("/proc/%s/fd", dp->d_name); + dirp2 = opendir (pathname); + + if (dirp2) + { + struct dirent *dp2; + + while ((dp2 = readdir (dirp2)) != NULL) + { + char *fdname; + char buf[1000]; + ssize_t rslt; + + if (!isdigit (dp2->d_name[0])) + continue; + + fdname = xstrprintf ("%s/%s", pathname, dp2->d_name); + rslt = readlink (fdname, buf, sizeof (buf) - 1); + if (rslt >= 0) + buf[rslt] = '\0'; + + buffer_xml_printf ( + &buffer, + "" + "%s" + "%s" + "%s" + "%s" + "", + dp->d_name, + command, + dp2->d_name, + (rslt >= 0 ? buf : dp2->d_name)); + } + + closedir (dirp2); + } + + xfree (pathname); + } + } + + closedir (dirp); + } + + buffer_grow_str0 (&buffer, "\n"); + buf = buffer_finish (&buffer); + len_avail = strlen (buf); + } + + if (offset >= len_avail) + { + /* Done. Get rid of the buffer. */ + buffer_free (&buffer); + buf = NULL; + len_avail = 0; + return 0; + } + + if (len > len_avail - offset) + len = len_avail - offset; + memcpy (readbuf, buf + offset, len); + + return len; +} + +/* Returns the socket state STATE in textual form. */ + +static const char * +format_socket_state (unsigned char state) +{ + /* Copied from include/net/tcp_states.h in the Linux kernel sources. */ + enum { + TCP_ESTABLISHED = 1, + TCP_SYN_SENT, + TCP_SYN_RECV, + TCP_FIN_WAIT1, + TCP_FIN_WAIT2, + TCP_TIME_WAIT, + TCP_CLOSE, + TCP_CLOSE_WAIT, + TCP_LAST_ACK, + TCP_LISTEN, + TCP_CLOSING + }; + + switch (state) + { + case TCP_ESTABLISHED: + return "ESTABLISHED"; + case TCP_SYN_SENT: + return "SYN_SENT"; + case TCP_SYN_RECV: + return "SYN_RECV"; + case TCP_FIN_WAIT1: + return "FIN_WAIT1"; + case TCP_FIN_WAIT2: + return "FIN_WAIT2"; + case TCP_TIME_WAIT: + return "TIME_WAIT"; + case TCP_CLOSE: + return "CLOSE"; + case TCP_CLOSE_WAIT: + return "CLOSE_WAIT"; + case TCP_LAST_ACK: + return "LAST_ACK"; + case TCP_LISTEN: + return "LISTEN"; + case TCP_CLOSING: + return "CLOSING"; + default: + return "(unknown)"; + } +} + +union socket_addr + { + struct sockaddr sa; + struct sockaddr_in sin; + struct sockaddr_in6 sin6; + }; + +/* Auxiliary function used by linux_xfer_osdata_isocket. Formats + information for all open internet sockets of type FAMILY on the + system into BUFFER. If TCP is set, only TCP sockets are processed, + otherwise only UDP sockets are processed. */ + +static void +print_sockets (unsigned short family, int tcp, struct buffer *buffer) +{ + const char *proc_file; + FILE *fp; + + if (family == AF_INET) + proc_file = tcp ? "/proc/net/tcp" : "/proc/net/udp"; + else if (family == AF_INET6) + proc_file = tcp ? "/proc/net/tcp6" : "/proc/net/udp6"; + else + return; + + fp = gdb_fopen_cloexec (proc_file, "r"); + if (fp) + { + char buf[8192]; + + do + { + if (fgets (buf, sizeof (buf), fp)) + { + uid_t uid; + unsigned int local_port, remote_port, state; + char local_address[NI_MAXHOST], remote_address[NI_MAXHOST]; + int result; + +#if NI_MAXHOST <= 32 +#error "local_address and remote_address buffers too small" +#endif + + result = sscanf (buf, + "%*d: %32[0-9A-F]:%X %32[0-9A-F]:%X %X %*X:%*X %*X:%*X %*X %d %*d %*u %*s\n", + local_address, &local_port, + remote_address, &remote_port, + &state, + &uid); + + if (result == 6) + { + union socket_addr locaddr, remaddr; + size_t addr_size; + char user[UT_NAMESIZE]; + char local_service[NI_MAXSERV], remote_service[NI_MAXSERV]; + + if (family == AF_INET) + { + sscanf (local_address, "%X", + &locaddr.sin.sin_addr.s_addr); + sscanf (remote_address, "%X", + &remaddr.sin.sin_addr.s_addr); + + locaddr.sin.sin_port = htons (local_port); + remaddr.sin.sin_port = htons (remote_port); + + addr_size = sizeof (struct sockaddr_in); + } + else + { + sscanf (local_address, "%8X%8X%8X%8X", + locaddr.sin6.sin6_addr.s6_addr32, + locaddr.sin6.sin6_addr.s6_addr32 + 1, + locaddr.sin6.sin6_addr.s6_addr32 + 2, + locaddr.sin6.sin6_addr.s6_addr32 + 3); + sscanf (remote_address, "%8X%8X%8X%8X", + remaddr.sin6.sin6_addr.s6_addr32, + remaddr.sin6.sin6_addr.s6_addr32 + 1, + remaddr.sin6.sin6_addr.s6_addr32 + 2, + remaddr.sin6.sin6_addr.s6_addr32 + 3); + + locaddr.sin6.sin6_port = htons (local_port); + remaddr.sin6.sin6_port = htons (remote_port); + + locaddr.sin6.sin6_flowinfo = 0; + remaddr.sin6.sin6_flowinfo = 0; + locaddr.sin6.sin6_scope_id = 0; + remaddr.sin6.sin6_scope_id = 0; + + addr_size = sizeof (struct sockaddr_in6); + } + + locaddr.sa.sa_family = remaddr.sa.sa_family = family; + + result = getnameinfo (&locaddr.sa, addr_size, + local_address, sizeof (local_address), + local_service, sizeof (local_service), + NI_NUMERICHOST | NI_NUMERICSERV + | (tcp ? 0 : NI_DGRAM)); + if (result) + continue; + + result = getnameinfo (&remaddr.sa, addr_size, + remote_address, + sizeof (remote_address), + remote_service, + sizeof (remote_service), + NI_NUMERICHOST | NI_NUMERICSERV + | (tcp ? 0 : NI_DGRAM)); + if (result) + continue; + + user_from_uid (user, sizeof (user), uid); + + buffer_xml_printf ( + buffer, + "" + "%s" + "%s" + "%s" + "%s" + "%s" + "%s" + "%s" + "%s" + "", + local_address, + local_service, + remote_address, + remote_service, + format_socket_state (state), + user, + (family == AF_INET) ? "INET" : "INET6", + tcp ? "STREAM" : "DGRAM"); + } + } + } + while (!feof (fp)); + + fclose (fp); + } +} + +/* Collect data about internet sockets and write it into READBUF. */ + +static LONGEST +linux_xfer_osdata_isockets (gdb_byte *readbuf, + ULONGEST offset, ULONGEST len) +{ + static const char *buf; + static LONGEST len_avail = -1; + static struct buffer buffer; + + if (offset == 0) + { + if (len_avail != -1 && len_avail != 0) + buffer_free (&buffer); + len_avail = 0; + buf = NULL; + buffer_init (&buffer); + buffer_grow_str (&buffer, "\n"); + + print_sockets (AF_INET, 1, &buffer); + print_sockets (AF_INET, 0, &buffer); + print_sockets (AF_INET6, 1, &buffer); + print_sockets (AF_INET6, 0, &buffer); + + buffer_grow_str0 (&buffer, "\n"); + buf = buffer_finish (&buffer); + len_avail = strlen (buf); + } + + if (offset >= len_avail) + { + /* Done. Get rid of the buffer. */ + buffer_free (&buffer); + buf = NULL; + len_avail = 0; + return 0; + } + + if (len > len_avail - offset) + len = len_avail - offset; + memcpy (readbuf, buf + offset, len); + + return len; +} + +/* Converts the time SECONDS into textual form and copies it into a + buffer TIME, with at most MAXLEN characters copied. */ + +static void +time_from_time_t (char *time, int maxlen, TIME_T seconds) +{ + if (!seconds) + time[0] = '\0'; + else + { + time_t t = (time_t) seconds; + + strncpy (time, ctime (&t), maxlen); + time[maxlen - 1] = '\0'; + } +} + +/* Finds the group name for the group GID and copies it into GROUP. + At most MAXLEN characters are copied. */ + +static void +group_from_gid (char *group, int maxlen, gid_t gid) +{ + struct group *grentry = getgrgid (gid); + + if (grentry) + { + strncpy (group, grentry->gr_name, maxlen); + /* Ensure that the group name is null-terminated. */ + group[maxlen - 1] = '\0'; + } + else + group[0] = '\0'; +} + +/* Collect data about shared memory recorded in /proc and write it + into READBUF. */ + +static LONGEST +linux_xfer_osdata_shm (gdb_byte *readbuf, + ULONGEST offset, ULONGEST len) +{ + static const char *buf; + static LONGEST len_avail = -1; + static struct buffer buffer; + + if (offset == 0) + { + FILE *fp; + + if (len_avail != -1 && len_avail != 0) + buffer_free (&buffer); + len_avail = 0; + buf = NULL; + buffer_init (&buffer); + buffer_grow_str (&buffer, "\n"); + + fp = gdb_fopen_cloexec ("/proc/sysvipc/shm", "r"); + if (fp) + { + char buf[8192]; + + do + { + if (fgets (buf, sizeof (buf), fp)) + { + key_t key; + uid_t uid, cuid; + gid_t gid, cgid; + PID_T cpid, lpid; + int shmid, size, nattch; + TIME_T atime, dtime, ctime; + unsigned int perms; + int items_read; + + items_read = sscanf (buf, + "%d %d %o %d %lld %lld %d %u %u %u %u %lld %lld %lld", + &key, &shmid, &perms, &size, + &cpid, &lpid, + &nattch, + &uid, &gid, &cuid, &cgid, + &atime, &dtime, &ctime); + + if (items_read == 14) + { + char user[UT_NAMESIZE], group[UT_NAMESIZE]; + char cuser[UT_NAMESIZE], cgroup[UT_NAMESIZE]; + char ccmd[32], lcmd[32]; + char atime_str[32], dtime_str[32], ctime_str[32]; + + user_from_uid (user, sizeof (user), uid); + group_from_gid (group, sizeof (group), gid); + user_from_uid (cuser, sizeof (cuser), cuid); + group_from_gid (cgroup, sizeof (cgroup), cgid); + + command_from_pid (ccmd, sizeof (ccmd), cpid); + command_from_pid (lcmd, sizeof (lcmd), lpid); + + time_from_time_t (atime_str, sizeof (atime_str), atime); + time_from_time_t (dtime_str, sizeof (dtime_str), dtime); + time_from_time_t (ctime_str, sizeof (ctime_str), ctime); + + buffer_xml_printf ( + &buffer, + "" + "%d" + "%d" + "%o" + "%d" + "%s" + "%s" + "%d" + "%s" + "%s" + "%s" + "%s" + "%s" + "%s" + "%s" + "", + key, + shmid, + perms, + size, + ccmd, + lcmd, + nattch, + user, + group, + cuser, + cgroup, + atime_str, + dtime_str, + ctime_str); + } + } + } + while (!feof (fp)); + + fclose (fp); + } + + buffer_grow_str0 (&buffer, "\n"); + buf = buffer_finish (&buffer); + len_avail = strlen (buf); + } + + if (offset >= len_avail) + { + /* Done. Get rid of the buffer. */ + buffer_free (&buffer); + buf = NULL; + len_avail = 0; + return 0; + } + + if (len > len_avail - offset) + len = len_avail - offset; + memcpy (readbuf, buf + offset, len); + + return len; +} + +/* Collect data about semaphores recorded in /proc and write it + into READBUF. */ + +static LONGEST +linux_xfer_osdata_sem (gdb_byte *readbuf, + ULONGEST offset, ULONGEST len) +{ + static const char *buf; + static LONGEST len_avail = -1; + static struct buffer buffer; + + if (offset == 0) + { + FILE *fp; + + if (len_avail != -1 && len_avail != 0) + buffer_free (&buffer); + len_avail = 0; + buf = NULL; + buffer_init (&buffer); + buffer_grow_str (&buffer, "\n"); + + fp = gdb_fopen_cloexec ("/proc/sysvipc/sem", "r"); + if (fp) + { + char buf[8192]; + + do + { + if (fgets (buf, sizeof (buf), fp)) + { + key_t key; + uid_t uid, cuid; + gid_t gid, cgid; + unsigned int perms, nsems; + int semid; + TIME_T otime, ctime; + int items_read; + + items_read = sscanf (buf, + "%d %d %o %u %d %d %d %d %lld %lld", + &key, &semid, &perms, &nsems, + &uid, &gid, &cuid, &cgid, + &otime, &ctime); + + if (items_read == 10) + { + char user[UT_NAMESIZE], group[UT_NAMESIZE]; + char cuser[UT_NAMESIZE], cgroup[UT_NAMESIZE]; + char otime_str[32], ctime_str[32]; + + user_from_uid (user, sizeof (user), uid); + group_from_gid (group, sizeof (group), gid); + user_from_uid (cuser, sizeof (cuser), cuid); + group_from_gid (cgroup, sizeof (cgroup), cgid); + + time_from_time_t (otime_str, sizeof (otime_str), otime); + time_from_time_t (ctime_str, sizeof (ctime_str), ctime); + + buffer_xml_printf ( + &buffer, + "" + "%d" + "%d" + "%o" + "%u" + "%s" + "%s" + "%s" + "%s" + "%s" + "%s" + "", + key, + semid, + perms, + nsems, + user, + group, + cuser, + cgroup, + otime_str, + ctime_str); + } + } + } + while (!feof (fp)); + + fclose (fp); + } + + buffer_grow_str0 (&buffer, "\n"); + buf = buffer_finish (&buffer); + len_avail = strlen (buf); + } + + if (offset >= len_avail) + { + /* Done. Get rid of the buffer. */ + buffer_free (&buffer); + buf = NULL; + len_avail = 0; + return 0; + } + + if (len > len_avail - offset) + len = len_avail - offset; + memcpy (readbuf, buf + offset, len); + + return len; +} + +/* Collect data about message queues recorded in /proc and write it + into READBUF. */ + +static LONGEST +linux_xfer_osdata_msg (gdb_byte *readbuf, + ULONGEST offset, ULONGEST len) +{ + static const char *buf; + static LONGEST len_avail = -1; + static struct buffer buffer; + + if (offset == 0) + { + FILE *fp; + + if (len_avail != -1 && len_avail != 0) + buffer_free (&buffer); + len_avail = 0; + buf = NULL; + buffer_init (&buffer); + buffer_grow_str (&buffer, "\n"); + + fp = gdb_fopen_cloexec ("/proc/sysvipc/msg", "r"); + if (fp) + { + char buf[8192]; + + do + { + if (fgets (buf, sizeof (buf), fp)) + { + key_t key; + PID_T lspid, lrpid; + uid_t uid, cuid; + gid_t gid, cgid; + unsigned int perms, cbytes, qnum; + int msqid; + TIME_T stime, rtime, ctime; + int items_read; + + items_read = sscanf (buf, + "%d %d %o %u %u %lld %lld %d %d %d %d %lld %lld %lld", + &key, &msqid, &perms, &cbytes, &qnum, + &lspid, &lrpid, &uid, &gid, &cuid, &cgid, + &stime, &rtime, &ctime); + + if (items_read == 14) + { + char user[UT_NAMESIZE], group[UT_NAMESIZE]; + char cuser[UT_NAMESIZE], cgroup[UT_NAMESIZE]; + char lscmd[32], lrcmd[32]; + char stime_str[32], rtime_str[32], ctime_str[32]; + + user_from_uid (user, sizeof (user), uid); + group_from_gid (group, sizeof (group), gid); + user_from_uid (cuser, sizeof (cuser), cuid); + group_from_gid (cgroup, sizeof (cgroup), cgid); + + command_from_pid (lscmd, sizeof (lscmd), lspid); + command_from_pid (lrcmd, sizeof (lrcmd), lrpid); + + time_from_time_t (stime_str, sizeof (stime_str), stime); + time_from_time_t (rtime_str, sizeof (rtime_str), rtime); + time_from_time_t (ctime_str, sizeof (ctime_str), ctime); + + buffer_xml_printf ( + &buffer, + "" + "%d" + "%d" + "%o" + "%u" + "%u" + "%s" + "%s" + "%s" + "%s" + "%s" + "%s" + "%s" + "%s" + "%s" + "", + key, + msqid, + perms, + cbytes, + qnum, + lscmd, + lrcmd, + user, + group, + cuser, + cgroup, + stime_str, + rtime_str, + ctime_str); + } + } + } + while (!feof (fp)); + + fclose (fp); + } + + buffer_grow_str0 (&buffer, "\n"); + buf = buffer_finish (&buffer); + len_avail = strlen (buf); + } + + if (offset >= len_avail) + { + /* Done. Get rid of the buffer. */ + buffer_free (&buffer); + buf = NULL; + len_avail = 0; + return 0; + } + + if (len > len_avail - offset) + len = len_avail - offset; + memcpy (readbuf, buf + offset, len); + + return len; +} + +/* Collect data about loaded kernel modules and write it into + READBUF. */ + +static LONGEST +linux_xfer_osdata_modules (gdb_byte *readbuf, + ULONGEST offset, ULONGEST len) +{ + static const char *buf; + static LONGEST len_avail = -1; + static struct buffer buffer; + + if (offset == 0) + { + FILE *fp; + + if (len_avail != -1 && len_avail != 0) + buffer_free (&buffer); + len_avail = 0; + buf = NULL; + buffer_init (&buffer); + buffer_grow_str (&buffer, "\n"); + + fp = gdb_fopen_cloexec ("/proc/modules", "r"); + if (fp) + { + char buf[8192]; + + do + { + if (fgets (buf, sizeof (buf), fp)) + { + char *name, *dependencies, *status, *tmp; + unsigned int size; + unsigned long long address; + int uses; + + name = strtok (buf, " "); + if (name == NULL) + continue; + + tmp = strtok (NULL, " "); + if (tmp == NULL) + continue; + if (sscanf (tmp, "%u", &size) != 1) + continue; + + tmp = strtok (NULL, " "); + if (tmp == NULL) + continue; + if (sscanf (tmp, "%d", &uses) != 1) + continue; + + dependencies = strtok (NULL, " "); + if (dependencies == NULL) + continue; + + status = strtok (NULL, " "); + if (status == NULL) + continue; + + tmp = strtok (NULL, "\n"); + if (tmp == NULL) + continue; + if (sscanf (tmp, "%llx", &address) != 1) + continue; + + buffer_xml_printf ( + &buffer, + "" + "%s" + "%u" + "%d" + "%s" + "%s" + "%llx" + "", + name, + size, + uses, + dependencies, + status, + address); + } + } + while (!feof (fp)); + + fclose (fp); + } + + buffer_grow_str0 (&buffer, "\n"); + buf = buffer_finish (&buffer); + len_avail = strlen (buf); + } + + if (offset >= len_avail) + { + /* Done. Get rid of the buffer. */ + buffer_free (&buffer); + buf = NULL; + len_avail = 0; + return 0; + } + + if (len > len_avail - offset) + len = len_avail - offset; + memcpy (readbuf, buf + offset, len); + + return len; +} + struct osdata_type { char *type; + char *title; char *description; - LONGEST (*getter) (gdb_byte *readbuf, ULONGEST offset, LONGEST len); + LONGEST (*getter) (gdb_byte *readbuf, ULONGEST offset, ULONGEST len); } osdata_table[] = { - { "processes", "Listing of all processes", linux_xfer_osdata_processes }, - { "threads", "Listing of all threads", linux_xfer_osdata_threads }, + { "processes", "Processes", "Listing of all processes", + linux_xfer_osdata_processes }, + { "procgroups", "Process groups", "Listing of all process groups", + linux_xfer_osdata_processgroups }, + { "threads", "Threads", "Listing of all threads", + linux_xfer_osdata_threads }, + { "files", "File descriptors", "Listing of all file descriptors", + linux_xfer_osdata_fds }, + { "sockets", "Sockets", "Listing of all internet-domain sockets", + linux_xfer_osdata_isockets }, + { "shm", "Shared-memory regions", "Listing of all shared-memory regions", + linux_xfer_osdata_shm }, + { "semaphores", "Semaphores", "Listing of all semaphores", + linux_xfer_osdata_sem }, + { "msg", "Message queues", "Listing of all message queues", + linux_xfer_osdata_msg }, + { "modules", "Kernel modules", "Listing of all loaded kernel modules", + linux_xfer_osdata_modules }, { NULL, NULL, NULL } }; LONGEST linux_common_xfer_osdata (const char *annex, gdb_byte *readbuf, - ULONGEST offset, LONGEST len) + ULONGEST offset, ULONGEST len) { if (!annex || *annex == '\0') { @@ -544,9 +1592,11 @@ linux_common_xfer_osdata (const char *annex, gdb_byte *readbuf, "" "%s" "%s" + "%s" "", osdata_table[i].type, - osdata_table[i].description); + osdata_table[i].description, + osdata_table[i].title); buffer_grow_str0 (&buffer, "\n"); buf = buffer_finish (&buffer);