diff options
Diffstat (limited to 'src/journal')
| -rw-r--r-- | src/journal/journalctl.c | 114 |
1 files changed, 96 insertions, 18 deletions
diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c index 1686f38c4e..cf359d20ca 100644 --- a/src/journal/journalctl.c +++ b/src/journal/journalctl.c @@ -69,6 +69,8 @@ #include "strv.h" #include "syslog-util.h" #include "terminal-util.h" +#include "udev.h" +#include "udev-util.h" #include "unit-name.h" #include "user-util.h" @@ -145,6 +147,80 @@ typedef struct BootId { LIST_FIELDS(struct BootId, boot_list); } BootId; +static int add_matches_for_device(sd_journal *j, const char *devpath) { + int r; + _cleanup_udev_unref_ struct udev *udev = NULL; + _cleanup_udev_device_unref_ struct udev_device *device = NULL; + struct udev_device *d = NULL; + struct stat st; + + assert(j); + assert(devpath); + + if (!path_startswith(devpath, "/dev/")) { + log_error("Devpath does not start with /dev/"); + return -EINVAL; + } + + udev = udev_new(); + if (!udev) + return log_oom(); + + r = stat(devpath, &st); + if (r < 0) + log_error_errno(errno, "Couldn't stat file: %m"); + + d = device = udev_device_new_from_devnum(udev, S_ISBLK(st.st_mode) ? 'b' : 'c', st.st_rdev); + if (!device) + return log_error_errno(errno, "Failed to get udev device from devnum %u:%u: %m", major(st.st_rdev), minor(st.st_rdev)); + + while (d) { + _cleanup_free_ char *match = NULL; + const char *subsys, *sysname, *devnode; + + subsys = udev_device_get_subsystem(d); + if (!subsys) { + d = udev_device_get_parent(d); + continue; + } + + sysname = udev_device_get_sysname(d); + if (!sysname) { + d = udev_device_get_parent(d); + continue; + } + + match = strjoin("_KERNEL_DEVICE=+", subsys, ":", sysname, NULL); + if (!match) + return log_oom(); + + r = sd_journal_add_match(j, match, 0); + if (r < 0) + return log_error_errno(r, "Failed to add match: %m"); + + devnode = udev_device_get_devnode(d); + if (devnode) { + _cleanup_free_ char *match1 = NULL; + + r = stat(devnode, &st); + if (r < 0) + return log_error_errno(r, "Failed to stat() device node \"%s\": %m", devnode); + + r = asprintf(&match1, "_KERNEL_DEVICE=%c%u:%u", S_ISBLK(st.st_mode) ? 'b' : 'c', major(st.st_rdev), minor(st.st_rdev)); + if (r < 0) + return log_oom(); + + r = sd_journal_add_match(j, match1, 0); + if (r < 0) + return log_error_errno(r, "Failed to add match: %m"); + } + + d = udev_device_get_parent(d); + } + + return 0; +} + static void pager_open_if_enabled(void) { if (arg_no_pager) @@ -825,13 +901,12 @@ static int add_matches(sd_journal *j, char **args) { have_term = false; } else if (path_is_absolute(*i)) { - _cleanup_free_ char *p, *t = NULL, *t2 = NULL; + _cleanup_free_ char *p, *t = NULL, *t2 = NULL, *interpreter = NULL; const char *path; - _cleanup_free_ char *interpreter = NULL; struct stat st; p = canonicalize_file_name(*i); - path = p ? p : *i; + path = p ?: *i; if (lstat(path, &st) < 0) return log_error_errno(errno, "Couldn't stat file: %m"); @@ -845,34 +920,37 @@ static int add_matches(sd_journal *j, char **args) { return log_oom(); t = strappend("_COMM=", comm); + if (!t) + return log_oom(); /* Append _EXE only if the interpreter is not a link. Otherwise, it might be outdated often. */ - if (lstat(interpreter, &st) == 0 && - !S_ISLNK(st.st_mode)) { + if (lstat(interpreter, &st) == 0 && !S_ISLNK(st.st_mode)) { t2 = strappend("_EXE=", interpreter); if (!t2) return log_oom(); } - } else + } else { t = strappend("_EXE=", path); - } else if (S_ISCHR(st.st_mode)) - (void) asprintf(&t, "_KERNEL_DEVICE=c%u:%u", major(st.st_rdev), minor(st.st_rdev)); - else if (S_ISBLK(st.st_mode)) - (void) asprintf(&t, "_KERNEL_DEVICE=b%u:%u", major(st.st_rdev), minor(st.st_rdev)); - else { + if (!t) + return log_oom(); + } + + r = sd_journal_add_match(j, t, 0); + + if (r >=0 && t2) + r = sd_journal_add_match(j, t2, 0); + + } else if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) { + r = add_matches_for_device(j, path); + if (r < 0) + return r; + } else { log_error("File is neither a device node, nor regular file, nor executable: %s", *i); return -EINVAL; } - if (!t) - return log_oom(); - - r = sd_journal_add_match(j, t, 0); - if (t2) - r = sd_journal_add_match(j, t2, 0); have_term = true; - } else { r = sd_journal_add_match(j, *i, 0); have_term = true; |