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-rw-r--r--src/proc_self_mountinfo.c401
1 files changed, 0 insertions, 401 deletions
diff --git a/src/proc_self_mountinfo.c b/src/proc_self_mountinfo.c
deleted file mode 100644
index 4ccdddff..00000000
--- a/src/proc_self_mountinfo.c
+++ /dev/null
@@ -1,401 +0,0 @@
-#include "common.h"
-
-// ----------------------------------------------------------------------------
-// taken from gnulib/mountlist.c
-
-#ifndef ME_REMOTE
-/* A file system is "remote" if its Fs_name contains a ':'
- or if (it is of type (smbfs or cifs) and its Fs_name starts with '//')
- or Fs_name is equal to "-hosts" (used by autofs to mount remote fs). */
-# define ME_REMOTE(Fs_name, Fs_type) \
- (strchr (Fs_name, ':') != NULL \
- || ((Fs_name)[0] == '/' \
- && (Fs_name)[1] == '/' \
- && (strcmp (Fs_type, "smbfs") == 0 \
- || strcmp (Fs_type, "cifs") == 0)) \
- || (strcmp("-hosts", Fs_name) == 0))
-#endif
-
-#define ME_DUMMY_0(Fs_name, Fs_type) \
- (strcmp (Fs_type, "autofs") == 0 \
- || strcmp (Fs_type, "proc") == 0 \
- || strcmp (Fs_type, "subfs") == 0 \
- /* for Linux 2.6/3.x */ \
- || strcmp (Fs_type, "debugfs") == 0 \
- || strcmp (Fs_type, "devpts") == 0 \
- || strcmp (Fs_type, "fusectl") == 0 \
- || strcmp (Fs_type, "mqueue") == 0 \
- || strcmp (Fs_type, "rpc_pipefs") == 0 \
- || strcmp (Fs_type, "sysfs") == 0 \
- /* FreeBSD, Linux 2.4 */ \
- || strcmp (Fs_type, "devfs") == 0 \
- /* for NetBSD 3.0 */ \
- || strcmp (Fs_type, "kernfs") == 0 \
- /* for Irix 6.5 */ \
- || strcmp (Fs_type, "ignore") == 0)
-
-/* Historically, we have marked as "dummy" any file system of type "none",
- but now that programs like du need to know about bind-mounted directories,
- we grant an exception to any with "bind" in its list of mount options.
- I.e., those are *not* dummy entries. */
-# define ME_DUMMY(Fs_name, Fs_type) \
- (ME_DUMMY_0 (Fs_name, Fs_type) || strcmp (Fs_type, "none") == 0)
-
-// ----------------------------------------------------------------------------
-
-// find the mount info with the given major:minor
-// in the supplied linked list of mountinfo structures
-struct mountinfo *mountinfo_find(struct mountinfo *root, unsigned long major, unsigned long minor) {
- struct mountinfo *mi;
-
- for(mi = root; mi ; mi = mi->next)
- if(unlikely(mi->major == major && mi->minor == minor))
- return mi;
-
- return NULL;
-}
-
-// find the mount info with the given filesystem and mount_source
-// in the supplied linked list of mountinfo structures
-struct mountinfo *mountinfo_find_by_filesystem_mount_source(struct mountinfo *root, const char *filesystem, const char *mount_source) {
- struct mountinfo *mi;
- uint32_t filesystem_hash = simple_hash(filesystem), mount_source_hash = simple_hash(mount_source);
-
- for(mi = root; mi ; mi = mi->next)
- if(unlikely(mi->filesystem
- && mi->mount_source
- && mi->filesystem_hash == filesystem_hash
- && mi->mount_source_hash == mount_source_hash
- && !strcmp(mi->filesystem, filesystem)
- && !strcmp(mi->mount_source, mount_source)))
- return mi;
-
- return NULL;
-}
-
-struct mountinfo *mountinfo_find_by_filesystem_super_option(struct mountinfo *root, const char *filesystem, const char *super_options) {
- struct mountinfo *mi;
- uint32_t filesystem_hash = simple_hash(filesystem);
-
- size_t solen = strlen(super_options);
-
- for(mi = root; mi ; mi = mi->next)
- if(unlikely(mi->filesystem
- && mi->super_options
- && mi->filesystem_hash == filesystem_hash
- && !strcmp(mi->filesystem, filesystem))) {
-
- // super_options is a comma separated list
- char *s = mi->super_options, *e;
- while(*s) {
- e = s + 1;
- while(*e && *e != ',') e++;
-
- size_t len = e - s;
- if(unlikely(len == solen && !strncmp(s, super_options, len)))
- return mi;
-
- if(*e == ',') s = ++e;
- else s = e;
- }
- }
-
- return NULL;
-}
-
-static void mountinfo_free(struct mountinfo *mi) {
- freez(mi->root);
- freez(mi->mount_point);
- freez(mi->mount_options);
- freez(mi->persistent_id);
-/*
- if(mi->optional_fields_count) {
- int i;
- for(i = 0; i < mi->optional_fields_count ; i++)
- free(*mi->optional_fields[i]);
- }
- free(mi->optional_fields);
-*/
- freez(mi->filesystem);
- freez(mi->mount_source);
- freez(mi->super_options);
- freez(mi);
-}
-
-// free a linked list of mountinfo structures
-void mountinfo_free_all(struct mountinfo *mi) {
- while(mi) {
- struct mountinfo *t = mi;
- mi = mi->next;
-
- mountinfo_free(t);
- }
-}
-
-static char *strdupz_decoding_octal(const char *string) {
- char *buffer = strdupz(string);
-
- char *d = buffer;
- const char *s = string;
-
- while(*s) {
- if(unlikely(*s == '\\')) {
- s++;
- if(likely(isdigit(*s) && isdigit(s[1]) && isdigit(s[2]))) {
- char c = *s++ - '0';
- c <<= 3;
- c |= *s++ - '0';
- c <<= 3;
- c |= *s++ - '0';
- *d++ = c;
- }
- else *d++ = '_';
- }
- else *d++ = *s++;
- }
- *d = '\0';
-
- return buffer;
-}
-
-static inline int is_read_only(const char *s) {
- if(!s) return 0;
-
- size_t len = strlen(s);
- if(len < 2) return 0;
- if(len == 2) {
- if(!strcmp(s, "ro")) return 1;
- return 0;
- }
- if(!strncmp(s, "ro,", 3)) return 1;
- if(!strncmp(&s[len - 3], ",ro", 3)) return 1;
- if(strstr(s, ",ro,")) return 1;
- return 0;
-}
-
-// read the whole mountinfo into a linked list
-struct mountinfo *mountinfo_read(int do_statvfs) {
- char filename[FILENAME_MAX + 1];
- snprintfz(filename, FILENAME_MAX, "%s/proc/self/mountinfo", netdata_configured_host_prefix);
- procfile *ff = procfile_open(filename, " \t", PROCFILE_FLAG_DEFAULT);
- if(unlikely(!ff)) {
- snprintfz(filename, FILENAME_MAX, "%s/proc/1/mountinfo", netdata_configured_host_prefix);
- ff = procfile_open(filename, " \t", PROCFILE_FLAG_DEFAULT);
- if(unlikely(!ff)) return NULL;
- }
-
- ff = procfile_readall(ff);
- if(unlikely(!ff))
- return NULL;
-
- struct mountinfo *root = NULL, *last = NULL, *mi = NULL;
-
- unsigned long l, lines = procfile_lines(ff);
- for(l = 0; l < lines ;l++) {
- if(unlikely(procfile_linewords(ff, l) < 5))
- continue;
-
- mi = mallocz(sizeof(struct mountinfo));
-
- unsigned long w = 0;
- mi->id = str2ul(procfile_lineword(ff, l, w)); w++;
- mi->parentid = str2ul(procfile_lineword(ff, l, w)); w++;
-
- char *major = procfile_lineword(ff, l, w), *minor; w++;
- for(minor = major; *minor && *minor != ':' ;minor++) ;
-
- if(unlikely(!*minor)) {
- error("Cannot parse major:minor on '%s' at line %lu of '%s'", major, l + 1, filename);
- freez(mi);
- continue;
- }
-
- *minor = '\0';
- minor++;
-
- mi->flags = 0;
-
- mi->major = str2ul(major);
- mi->minor = str2ul(minor);
-
- mi->root = strdupz(procfile_lineword(ff, l, w)); w++;
- mi->root_hash = simple_hash(mi->root);
-
- mi->mount_point = strdupz_decoding_octal(procfile_lineword(ff, l, w)); w++;
- mi->mount_point_hash = simple_hash(mi->mount_point);
-
- mi->persistent_id = strdupz(mi->mount_point);
- netdata_fix_chart_id(mi->persistent_id);
- mi->persistent_id_hash = simple_hash(mi->persistent_id);
-
- mi->mount_options = strdupz(procfile_lineword(ff, l, w)); w++;
-
- if(unlikely(is_read_only(mi->mount_options)))
- mi->flags |= MOUNTINFO_READONLY;
-
- // count the optional fields
-/*
- unsigned long wo = w;
-*/
- mi->optional_fields_count = 0;
- char *s = procfile_lineword(ff, l, w);
- while(*s && *s != '-') {
- w++;
- s = procfile_lineword(ff, l, w);
- mi->optional_fields_count++;
- }
-
-/*
- if(unlikely(mi->optional_fields_count)) {
- // we have some optional fields
- // read them into a new array of pointers;
-
- mi->optional_fields = mallocz(mi->optional_fields_count * sizeof(char *));
-
- int i;
- for(i = 0; i < mi->optional_fields_count ; i++) {
- *mi->optional_fields[wo] = strdupz(procfile_lineword(ff, l, w));
- wo++;
- }
- }
- else
- mi->optional_fields = NULL;
-*/
-
- if(likely(*s == '-')) {
- w++;
-
- mi->filesystem = strdupz(procfile_lineword(ff, l, w)); w++;
- mi->filesystem_hash = simple_hash(mi->filesystem);
-
- mi->mount_source = strdupz_decoding_octal(procfile_lineword(ff, l, w)); w++;
- mi->mount_source_hash = simple_hash(mi->mount_source);
-
- mi->super_options = strdupz(procfile_lineword(ff, l, w)); w++;
-
- if(unlikely(is_read_only(mi->super_options)))
- mi->flags |= MOUNTINFO_READONLY;
-
- if(unlikely(ME_DUMMY(mi->mount_source, mi->filesystem)))
- mi->flags |= MOUNTINFO_IS_DUMMY;
-
- if(unlikely(ME_REMOTE(mi->mount_source, mi->filesystem)))
- mi->flags |= MOUNTINFO_IS_REMOTE;
-
- // mark as BIND the duplicates (i.e. same filesystem + same source)
- if(do_statvfs) {
- struct stat buf;
- if(unlikely(stat(mi->mount_point, &buf) == -1)) {
- mi->st_dev = 0;
- mi->flags |= MOUNTINFO_NO_STAT;
- }
- else {
- mi->st_dev = buf.st_dev;
-
- struct mountinfo *mt;
- for(mt = root; mt; mt = mt->next) {
- if(unlikely(mt->st_dev == mi->st_dev && !(mt->flags & MOUNTINFO_IS_SAME_DEV))) {
- if(strlen(mi->mount_point) < strlen(mt->mount_point))
- mt->flags |= MOUNTINFO_IS_SAME_DEV;
- else
- mi->flags |= MOUNTINFO_IS_SAME_DEV;
- }
- }
- }
- }
- else {
- mi->st_dev = 0;
- }
- }
- else {
- mi->filesystem = NULL;
- mi->filesystem_hash = 0;
-
- mi->mount_source = NULL;
- mi->mount_source_hash = 0;
-
- mi->super_options = NULL;
-
- mi->st_dev = 0;
- }
-
- // check if it has size
- if(do_statvfs && !(mi->flags & MOUNTINFO_IS_DUMMY)) {
- struct statvfs buff_statvfs;
- if(unlikely(statvfs(mi->mount_point, &buff_statvfs) < 0)) {
- mi->flags |= MOUNTINFO_NO_STAT;
- }
- else if(unlikely(!buff_statvfs.f_blocks /* || !buff_statvfs.f_files */)) {
- mi->flags |= MOUNTINFO_NO_SIZE;
- }
- }
-
- // link it
- if(unlikely(!root))
- root = mi;
- else
- last->next = mi;
-
- last = mi;
- mi->next = NULL;
-
-/*
-#ifdef NETDATA_INTERNAL_CHECKS
- fprintf(stderr, "MOUNTINFO: %ld %ld %lu:%lu root '%s', persistent id '%s', mount point '%s', mount options '%s', filesystem '%s', mount source '%s', super options '%s'%s%s%s%s%s%s\n",
- mi->id,
- mi->parentid,
- mi->major,
- mi->minor,
- mi->root,
- mi->persistent_id,
- (mi->mount_point)?mi->mount_point:"",
- (mi->mount_options)?mi->mount_options:"",
- (mi->filesystem)?mi->filesystem:"",
- (mi->mount_source)?mi->mount_source:"",
- (mi->super_options)?mi->super_options:"",
- (mi->flags & MOUNTINFO_IS_DUMMY)?" DUMMY":"",
- (mi->flags & MOUNTINFO_IS_BIND)?" BIND":"",
- (mi->flags & MOUNTINFO_IS_REMOTE)?" REMOTE":"",
- (mi->flags & MOUNTINFO_NO_STAT)?" NOSTAT":"",
- (mi->flags & MOUNTINFO_NO_SIZE)?" NOSIZE":"",
- (mi->flags & MOUNTINFO_IS_SAME_DEV)?" SAMEDEV":""
- );
-#endif
-*/
- }
-
-/* find if the mount options have "bind" in them
- {
- FILE *fp = setmntent(MOUNTED, "r");
- if (fp != NULL) {
- struct mntent mntbuf;
- struct mntent *mnt;
- char buf[4096 + 1];
-
- while ((mnt = getmntent_r(fp, &mntbuf, buf, 4096))) {
- char *bind = hasmntopt(mnt, "bind");
- if(unlikely(bind)) {
- struct mountinfo *mi;
- for(mi = root; mi ; mi = mi->next) {
- if(unlikely(strcmp(mnt->mnt_dir, mi->mount_point) == 0)) {
- fprintf(stderr, "Mount point '%s' is BIND\n", mi->mount_point);
- mi->flags |= MOUNTINFO_IS_BIND;
- break;
- }
- }
-
-#ifdef NETDATA_INTERNAL_CHECKS
- if(unlikely(!mi)) {
- error("Mount point '%s' not found in /proc/self/mountinfo", mnt->mnt_dir);
- }
-#endif
- }
- }
- endmntent(fp);
- }
- }
-*/
-
- procfile_close(ff);
- return root;
-}
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