Merging upstream version 1.45.3+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 0 insertions, 490 deletions

diff --git a/libnetdata/procfile/procfile.c b/libnetdata/procfile/procfile.c
deleted file mode 100644
index 0bc731d68..000000000
--- a/libnetdata/procfile/procfile.c
+++ /dev/null
@@ -1,490 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "../libnetdata.h"
-
-#define PF_PREFIX "PROCFILE"
-
-#define PFWORDS_INCREASE_STEP 2000
-#define PFLINES_INCREASE_STEP 200
-#define PROCFILE_INCREMENT_BUFFER 4096
-
-int procfile_open_flags = O_RDONLY;
-
-int procfile_adaptive_initial_allocation = 0;
-
-// if adaptive allocation is set, these store the
-// max values we have seen so far
-size_t procfile_max_lines = PFLINES_INCREASE_STEP;
-size_t procfile_max_words = PFWORDS_INCREASE_STEP;
-size_t procfile_max_allocation = PROCFILE_INCREMENT_BUFFER;
-
-
-// ----------------------------------------------------------------------------
-
-char *procfile_filename(procfile *ff) {
-    if(ff->filename)
-        return ff->filename;
-
-    char filename[FILENAME_MAX + 1];
-    char buffer[FILENAME_MAX + 1];
-    snprintfz(buffer, FILENAME_MAX, "/proc/self/fd/%d", ff->fd);
-
-    ssize_t l = readlink(buffer, filename, FILENAME_MAX);
-    if(unlikely(l == -1))
-        snprintfz(filename, FILENAME_MAX, "unknown filename for fd %d", ff->fd);
-    else
-        filename[l] = '\0';
-
-
-    ff->filename = strdupz(filename);
-
-    // on non-linux systems, something like this will be needed
-    // fcntl(ff->fd, F_GETPATH, ff->filename)
-
-    return ff->filename;
-}
-
-// ----------------------------------------------------------------------------
-// An array of words
-
-static inline void procfile_words_add(procfile *ff, char *str) {
-    // netdata_log_debug(D_PROCFILE, PF_PREFIX ":   adding word No %d: '%s'", fw->len, str);
-
-    pfwords *fw = ff->words;
-    if(unlikely(fw->len == fw->size)) {
-        // netdata_log_debug(D_PROCFILE, PF_PREFIX ":   expanding words");
-        size_t minimum = PFWORDS_INCREASE_STEP;
-        size_t optimal = fw->size / 2;
-        size_t wanted = (optimal > minimum)?optimal:minimum;
-
-        ff->words = fw = reallocz(fw, sizeof(pfwords) + (fw->size + wanted) * sizeof(char *));
-        fw->size += wanted;
-    }
-
-    fw->words[fw->len++] = str;
-}
-
-NEVERNULL
-static inline pfwords *procfile_words_create(void) {
-    // netdata_log_debug(D_PROCFILE, PF_PREFIX ":   initializing words");
-
-    size_t size = (procfile_adaptive_initial_allocation) ? procfile_max_words : PFWORDS_INCREASE_STEP;
-
-    pfwords *new = mallocz(sizeof(pfwords) + size * sizeof(char *));
-    new->len = 0;
-    new->size = size;
-    return new;
-}
-
-static inline void procfile_words_reset(pfwords *fw) {
-    // netdata_log_debug(D_PROCFILE, PF_PREFIX ":   resetting words");
-    fw->len = 0;
-}
-
-static inline void procfile_words_free(pfwords *fw) {
-    // netdata_log_debug(D_PROCFILE, PF_PREFIX ":   freeing words");
-
-    freez(fw);
-}
-
-
-// ----------------------------------------------------------------------------
-// An array of lines
-
-NEVERNULL
-static inline size_t *procfile_lines_add(procfile *ff) {
-    // netdata_log_debug(D_PROCFILE, PF_PREFIX ":   adding line %d at word %d", fl->len, first_word);
-
-    pflines *fl = ff->lines;
-    if(unlikely(fl->len == fl->size)) {
-        // netdata_log_debug(D_PROCFILE, PF_PREFIX ":   expanding lines");
-        size_t minimum = PFLINES_INCREASE_STEP;
-        size_t optimal = fl->size / 2;
-        size_t wanted = (optimal > minimum)?optimal:minimum;
-
-        ff->lines = fl = reallocz(fl, sizeof(pflines) + (fl->size + wanted) * sizeof(ffline));
-        fl->size += wanted;
-    }
-
-    ffline *ffl = &fl->lines[fl->len++];
-    ffl->words = 0;
-    ffl->first = ff->words->len;
-
-    return &ffl->words;
-}
-
-NEVERNULL
-static inline pflines *procfile_lines_create(void) {
-    // netdata_log_debug(D_PROCFILE, PF_PREFIX ":   initializing lines");
-
-    size_t size = (unlikely(procfile_adaptive_initial_allocation)) ? procfile_max_words : PFLINES_INCREASE_STEP;
-
-    pflines *new = mallocz(sizeof(pflines) + size * sizeof(ffline));
-    new->len = 0;
-    new->size = size;
-    return new;
-}
-
-static inline void procfile_lines_reset(pflines *fl) {
-    // netdata_log_debug(D_PROCFILE, PF_PREFIX ":   resetting lines");
-
-    fl->len = 0;
-}
-
-static inline void procfile_lines_free(pflines *fl) {
-    // netdata_log_debug(D_PROCFILE, PF_PREFIX ":   freeing lines");
-
-    freez(fl);
-}
-
-
-// ----------------------------------------------------------------------------
-// The procfile
-
-void procfile_close(procfile *ff) {
-    if(unlikely(!ff)) return;
-
-    netdata_log_debug(D_PROCFILE, PF_PREFIX ": Closing file '%s'", procfile_filename(ff));
-
-    freez(ff->filename);
-    procfile_lines_free(ff->lines);
-    procfile_words_free(ff->words);
-
-    if(likely(ff->fd != -1)) close(ff->fd);
-    freez(ff);
-}
-
-NOINLINE
-static void procfile_parser(procfile *ff) {
-    // netdata_log_debug(D_PROCFILE, PF_PREFIX ": Parsing file '%s'", ff->filename);
-
-    char  *s = ff->data                 // our current position
-        , *e = &ff->data[ff->len]       // the terminating null
-        , *t = ff->data;                // the first character of a word (or quoted / parenthesized string)
-
-                                        // the look up array to find our type of character
-    PF_CHAR_TYPE *separators = ff->separators;
-
-    char quote = 0;                     // the quote character - only when in quoted string
-    size_t opened = 0;                  // counts the number of open parenthesis
-
-    size_t *line_words = procfile_lines_add(ff);
-
-    while(s < e) {
-        PF_CHAR_TYPE ct = separators[(unsigned char)(*s)];
-
-        // this is faster than a switch()
-        // read more here: http://lazarenko.me/switch/
-        if(likely(ct == PF_CHAR_IS_WORD)) {
-            s++;
-        }
-        else if(likely(ct == PF_CHAR_IS_SEPARATOR)) {
-            if(!quote && !opened) {
-                if (s != t) {
-                    // separator, but we have word before it
-                    *s = '\0';
-                    procfile_words_add(ff, t);
-                    (*line_words)++;
-                    t = ++s;
-                }
-                else {
-                    // separator at the beginning
-                    // skip it
-                    t = ++s;
-                }
-            }
-            else {
-                // we are inside a quote or parenthesized string
-                s++;
-            }
-        }
-        else if(likely(ct == PF_CHAR_IS_NEWLINE)) {
-            // end of line
-
-            *s = '\0';
-            procfile_words_add(ff, t);
-            (*line_words)++;
-            t = ++s;
-
-            // netdata_log_debug(D_PROCFILE, PF_PREFIX ":   ended line %d with %d words", l, ff->lines->lines[l].words);
-
-            line_words = procfile_lines_add(ff);
-        }
-        else if(likely(ct == PF_CHAR_IS_QUOTE)) {
-            if(unlikely(!quote && s == t)) {
-                // quote opened at the beginning
-                quote = *s;
-                t = ++s;
-            }
-            else if(unlikely(quote && quote == *s)) {
-                // quote closed
-                quote = 0;
-
-                *s = '\0';
-                procfile_words_add(ff, t);
-                (*line_words)++;
-                t = ++s;
-            }
-            else
-                s++;
-        }
-        else if(likely(ct == PF_CHAR_IS_OPEN)) {
-            if(s == t) {
-                opened++;
-                t = ++s;
-            }
-            else if(opened) {
-                opened++;
-                s++;
-            }
-            else
-                s++;
-        }
-        else if(likely(ct == PF_CHAR_IS_CLOSE)) {
-            if(opened) {
-                opened--;
-
-                if(!opened) {
-                    *s = '\0';
-                    procfile_words_add(ff, t);
-                    (*line_words)++;
-                    t = ++s;
-                }
-                else
-                    s++;
-            }
-            else
-                s++;
-        }
-        else
-            fatal("Internal Error: procfile_readall() does not handle all the cases.");
-    }
-
-    if(likely(s > t && t < e)) {
-        // the last word
-        if(unlikely(ff->len >= ff->size)) {
-            // we are going to loose the last byte
-            s = &ff->data[ff->size - 1];
-        }
-
-        *s = '\0';
-        procfile_words_add(ff, t);
-        (*line_words)++;
-        // t = ++s;
-    }
-}
-
-procfile *procfile_readall(procfile *ff) {
-    // netdata_log_debug(D_PROCFILE, PF_PREFIX ": Reading file '%s'.", ff->filename);
-
-    ff->len = 0;    // zero the used size
-    ssize_t r = 1;  // read at least once
-    while(r > 0) {
-        ssize_t s = ff->len;
-        ssize_t x = ff->size - s;
-
-        if(unlikely(!x)) {
-            size_t minimum = PROCFILE_INCREMENT_BUFFER;
-            size_t optimal = ff->size / 2;
-            size_t wanted = (optimal > minimum)?optimal:minimum;
-
-            netdata_log_debug(D_PROCFILE, PF_PREFIX ": Expanding data buffer for file '%s' by %zu bytes.", procfile_filename(ff), wanted);
-            ff = reallocz(ff, sizeof(procfile) + ff->size + wanted);
-            ff->size += wanted;
-        }
-
-        netdata_log_debug(D_PROCFILE, "Reading file '%s', from position %zd with length %zd", procfile_filename(ff), s, (ssize_t)(ff->size - s));
-        r = read(ff->fd, &ff->data[s], ff->size - s);
-        if(unlikely(r == -1)) {
-            if(unlikely(!(ff->flags & PROCFILE_FLAG_NO_ERROR_ON_FILE_IO))) collector_error(PF_PREFIX ": Cannot read from file '%s' on fd %d", procfile_filename(ff), ff->fd);
-            else if(unlikely(ff->flags & PROCFILE_FLAG_ERROR_ON_ERROR_LOG))
-                netdata_log_error(PF_PREFIX ": Cannot read from file '%s' on fd %d", procfile_filename(ff), ff->fd);
-            procfile_close(ff);
-            return NULL;
-        }
-
-        ff->len += r;
-    }
-
-    // netdata_log_debug(D_PROCFILE, "Rewinding file '%s'", ff->filename);
-    if(unlikely(lseek(ff->fd, 0, SEEK_SET) == -1)) {
-        if(unlikely(!(ff->flags & PROCFILE_FLAG_NO_ERROR_ON_FILE_IO))) collector_error(PF_PREFIX ": Cannot rewind on file '%s'.", procfile_filename(ff));
-        else if(unlikely(ff->flags & PROCFILE_FLAG_ERROR_ON_ERROR_LOG))
-            netdata_log_error(PF_PREFIX ": Cannot rewind on file '%s'.", procfile_filename(ff));
-        procfile_close(ff);
-        return NULL;
-    }
-
-    procfile_lines_reset(ff->lines);
-    procfile_words_reset(ff->words);
-    procfile_parser(ff);
-
-    if(unlikely(procfile_adaptive_initial_allocation)) {
-        if(unlikely(ff->len > procfile_max_allocation)) procfile_max_allocation = ff->len;
-        if(unlikely(ff->lines->len > procfile_max_lines)) procfile_max_lines = ff->lines->len;
-        if(unlikely(ff->words->len > procfile_max_words)) procfile_max_words = ff->words->len;
-    }
-
-    // netdata_log_debug(D_PROCFILE, "File '%s' updated.", ff->filename);
-    return ff;
-}
-
-static PF_CHAR_TYPE procfile_default_separators[256];
-__attribute__((constructor)) void procfile_initialize_default_separators(void) {
-    int i = 256;
-    while(i--) {
-        if(unlikely(i == '\n' || i == '\r'))
-            procfile_default_separators[i] = PF_CHAR_IS_NEWLINE;
-
-        else if(unlikely(isspace(i) || !isprint(i)))
-            procfile_default_separators[i] = PF_CHAR_IS_SEPARATOR;
-
-        else
-            procfile_default_separators[i] = PF_CHAR_IS_WORD;
-    }
-}
-
-NOINLINE
-static void procfile_set_separators(procfile *ff, const char *separators) {
-    // set the separators
-    if(unlikely(!separators))
-        separators = " \t=|";
-
-    // copy the default
-    memcpy(ff->separators, procfile_default_separators, 256 * sizeof(PF_CHAR_TYPE));
-
-    PF_CHAR_TYPE *ffs = ff->separators;
-    const char *s = separators;
-    while(*s)
-        ffs[(int)*s++] = PF_CHAR_IS_SEPARATOR;
-}
-
-void procfile_set_quotes(procfile *ff, const char *quotes) {
-    PF_CHAR_TYPE *ffs = ff->separators;
-
-    // remove all quotes
-    int i = 256;
-    while(i--)
-        if(unlikely(ffs[i] == PF_CHAR_IS_QUOTE))
-            ffs[i] = PF_CHAR_IS_WORD;
-
-    // if nothing given, return
-    if(unlikely(!quotes || !*quotes))
-        return;
-
-    // set the quotes
-    const char *s = quotes;
-    while(*s)
-        ffs[(int)*s++] = PF_CHAR_IS_QUOTE;
-}
-
-void procfile_set_open_close(procfile *ff, const char *open, const char *close) {
-    PF_CHAR_TYPE *ffs = ff->separators;
-
-    // remove all open/close
-    int i = 256;
-    while(i--)
-        if(unlikely(ffs[i] == PF_CHAR_IS_OPEN || ffs[i] == PF_CHAR_IS_CLOSE))
-            ffs[i] = PF_CHAR_IS_WORD;
-
-    // if nothing given, return
-    if(unlikely(!open || !*open || !close || !*close))
-        return;
-
-    // set the openings
-    const char *s = open;
-    while(*s)
-        ffs[(int)*s++] = PF_CHAR_IS_OPEN;
-
-    // set the closings
-    s = close;
-    while(*s)
-        ffs[(int)*s++] = PF_CHAR_IS_CLOSE;
-}
-
-procfile *procfile_open(const char *filename, const char *separators, uint32_t flags) {
-    netdata_log_debug(D_PROCFILE, PF_PREFIX ": Opening file '%s'", filename);
-
-    int fd = open(filename, procfile_open_flags, 0666);
-    if(unlikely(fd == -1)) {
-        if (unlikely(flags & PROCFILE_FLAG_ERROR_ON_ERROR_LOG))
-            netdata_log_error(PF_PREFIX ": Cannot open file '%s'", filename);
-        else if (unlikely(!(flags & PROCFILE_FLAG_NO_ERROR_ON_FILE_IO))) {
-            if (errno == ENOENT)
-                collector_info(PF_PREFIX ": Cannot open file '%s'", filename);
-            else
-                collector_error(PF_PREFIX ": Cannot open file '%s'", filename);
-        }
-        return NULL;
-    }
-
-    // netdata_log_info("PROCFILE: opened '%s' on fd %d", filename, fd);
-
-    size_t size = (unlikely(procfile_adaptive_initial_allocation)) ? procfile_max_allocation : PROCFILE_INCREMENT_BUFFER;
-    procfile *ff = mallocz(sizeof(procfile) + size);
-
-    //strncpyz(ff->filename, filename, FILENAME_MAX);
-    ff->filename = NULL;
-    ff->fd = fd;
-    ff->size = size;
-    ff->len = 0;
-    ff->flags = flags;
-
-    ff->lines = procfile_lines_create();
-    ff->words = procfile_words_create();
-
-    procfile_set_separators(ff, separators);
-
-    netdata_log_debug(D_PROCFILE, "File '%s' opened.", filename);
-    return ff;
-}
-
-procfile *procfile_reopen(procfile *ff, const char *filename, const char *separators, uint32_t flags) {
-    if(unlikely(!ff)) return procfile_open(filename, separators, flags);
-
-    if(likely(ff->fd != -1)) {
-        // netdata_log_info("PROCFILE: closing fd %d", ff->fd);
-        close(ff->fd);
-    }
-
-    ff->fd = open(filename, procfile_open_flags, 0666);
-    if(unlikely(ff->fd == -1)) {
-        procfile_close(ff);
-        return NULL;
-    }
-
-    // netdata_log_info("PROCFILE: opened '%s' on fd %d", filename, ff->fd);
-
-    //strncpyz(ff->filename, filename, FILENAME_MAX);
-    freez(ff->filename);
-    ff->filename = NULL;
-    ff->flags = flags;
-
-    // do not do the separators again if NULL is given
-    if(likely(separators)) procfile_set_separators(ff, separators);
-
-    return ff;
-}
-
-// ----------------------------------------------------------------------------
-// example parsing of procfile data
-
-void procfile_print(procfile *ff) {
-    size_t lines = procfile_lines(ff), l;
-    char *s;
-    (void)s;
-
-    netdata_log_debug(D_PROCFILE, "File '%s' with %zu lines and %zu words", procfile_filename(ff), ff->lines->len, ff->words->len);
-
-    for(l = 0; likely(l < lines) ;l++) {
-        size_t words = procfile_linewords(ff, l);
-
-        netdata_log_debug(D_PROCFILE, " line %zu starts at word %zu and has %zu words", l, ff->lines->lines[l].first, ff->lines->lines[l].words);
-
-        size_t w;
-        for(w = 0; likely(w < words) ;w++) {
-            s = procfile_lineword(ff, l, w);
-            netdata_log_debug(D_PROCFILE, "     [%zu.%zu] '%s'", l, w, s);
-        }
-    }
-}