From caa4e428604780bb098060f7286c69d30c8b4007 Mon Sep 17 00:00:00 2001 From: Jelmer Vernooij Date: Sat, 11 Oct 2008 21:05:38 +0200 Subject: Move lib/util from source4 to top-level libutil. Conflicts: source4/Makefile --- source4/lib/util/util_file.c | 404 ------------------------------------------- 1 file changed, 404 deletions(-) delete mode 100644 source4/lib/util/util_file.c (limited to 'source4/lib/util/util_file.c') diff --git a/source4/lib/util/util_file.c b/source4/lib/util/util_file.c deleted file mode 100644 index c3e22196c0..0000000000 --- a/source4/lib/util/util_file.c +++ /dev/null @@ -1,404 +0,0 @@ -/* - * Unix SMB/CIFS implementation. - * SMB parameters and setup - * Copyright (C) Andrew Tridgell 1992-1998 Modified by Jeremy Allison 1995. - * - * Added afdgets() Jelmer Vernooij 2005 - * - * This program is free software; you can redistribute it and/or modify it under - * the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 3 of the License, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, see . - */ - -#include "includes.h" -#include "system/shmem.h" -#include "system/filesys.h" - -/** - * @file - * @brief File-related utility functions - */ - -/** -read a line from a file with possible \ continuation chars. -Blanks at the start or end of a line are stripped. -The string will be allocated if s2 is NULL -**/ -_PUBLIC_ char *fgets_slash(char *s2,int maxlen,XFILE *f) -{ - char *s=s2; - int len = 0; - int c; - bool start_of_line = true; - - if (x_feof(f)) - return(NULL); - - if (maxlen <2) return(NULL); - - if (!s2) - { - maxlen = MIN(maxlen,8); - s = (char *)malloc(maxlen); - } - - if (!s) return(NULL); - - *s = 0; - - while (len < maxlen-1) - { - c = x_getc(f); - switch (c) - { - case '\r': - break; - case '\n': - while (len > 0 && s[len-1] == ' ') - { - s[--len] = 0; - } - if (len > 0 && s[len-1] == '\\') - { - s[--len] = 0; - start_of_line = true; - break; - } - return(s); - case EOF: - if (len <= 0 && !s2) - SAFE_FREE(s); - return(len>0?s:NULL); - case ' ': - if (start_of_line) - break; - /* fall through */ - default: - start_of_line = false; - s[len++] = c; - s[len] = 0; - } - if (!s2 && len > maxlen-3) - { - char *t; - - maxlen *= 2; - t = realloc_p(s, char, maxlen); - if (!t) { - DEBUG(0,("fgets_slash: failed to expand buffer!\n")); - SAFE_FREE(s); - return(NULL); - } else s = t; - } - } - return(s); -} - -/** - * Read one line (data until next newline or eof) and allocate it - */ -_PUBLIC_ char *afdgets(int fd, TALLOC_CTX *mem_ctx, size_t hint) -{ - char *data = NULL; - ssize_t alloc_size = 0, offset = 0, ret; - int p; - - if (hint <= 0) hint = 0x100; - - do { - alloc_size += hint; - - data = talloc_realloc(mem_ctx, data, char, alloc_size); - - if (!data) - return NULL; - - ret = read(fd, data + offset, hint); - - if (ret == 0) { - return NULL; - } - - if (ret == -1) { - talloc_free(data); - return NULL; - } - - /* Find newline */ - for (p = 0; p < ret; p++) { - if (data[offset + p] == '\n') - break; - } - - if (p < ret) { - data[offset + p] = '\0'; - - /* Go back to position of newline */ - lseek(fd, p - ret + 1, SEEK_CUR); - return data; - } - - offset += ret; - - } while (ret == hint); - - data[offset] = '\0'; - - return data; -} - - -/** -load a file into memory from a fd. -**/ -_PUBLIC_ char *fd_load(int fd, size_t *size, TALLOC_CTX *mem_ctx) -{ - struct stat sbuf; - char *p; - - if (fstat(fd, &sbuf) != 0) return NULL; - - p = (char *)talloc_size(mem_ctx, sbuf.st_size+1); - if (!p) return NULL; - - if (read(fd, p, sbuf.st_size) != sbuf.st_size) { - talloc_free(p); - return NULL; - } - p[sbuf.st_size] = 0; - - if (size) *size = sbuf.st_size; - - return p; -} - -/** -load a file into memory -**/ -_PUBLIC_ char *file_load(const char *fname, size_t *size, TALLOC_CTX *mem_ctx) -{ - int fd; - char *p; - - if (!fname || !*fname) return NULL; - - fd = open(fname,O_RDONLY); - if (fd == -1) return NULL; - - p = fd_load(fd, size, mem_ctx); - - close(fd); - - return p; -} - - -/** -mmap (if possible) or read a file -**/ -_PUBLIC_ void *map_file(const char *fname, size_t size) -{ - size_t s2 = 0; - void *p = NULL; -#ifdef HAVE_MMAP - int fd; - fd = open(fname, O_RDONLY, 0); - if (fd == -1) { - DEBUG(2,("Failed to load %s - %s\n", fname, strerror(errno))); - return NULL; - } - p = mmap(NULL, size, PROT_READ, MAP_SHARED|MAP_FILE, fd, 0); - close(fd); - if (p == MAP_FAILED) { - DEBUG(1,("Failed to mmap %s - %s\n", fname, strerror(errno))); - return NULL; - } -#endif - if (!p) { - p = file_load(fname, &s2, talloc_autofree_context()); - if (!p) return NULL; - if (s2 != size) { - DEBUG(1,("incorrect size for %s - got %d expected %d\n", - fname, (int)s2, (int)size)); - talloc_free(p); - return NULL; - } - } - - return p; -} - - -/** -parse a buffer into lines -'p' will be freed on error, and otherwise will be made a child of the returned array -**/ -static char **file_lines_parse(char *p, size_t size, int *numlines, TALLOC_CTX *mem_ctx) -{ - int i; - char *s, **ret; - - if (!p) return NULL; - - for (s = p, i=0; s < p+size; s++) { - if (s[0] == '\n') i++; - } - - ret = talloc_array(mem_ctx, char *, i+2); - if (!ret) { - talloc_free(p); - return NULL; - } - - talloc_steal(ret, p); - - memset(ret, 0, sizeof(ret[0])*(i+2)); - - ret[0] = p; - for (s = p, i=0; s < p+size; s++) { - if (s[0] == '\n') { - s[0] = 0; - i++; - ret[i] = s+1; - } - if (s[0] == '\r') s[0] = 0; - } - - /* remove any blank lines at the end */ - while (i > 0 && ret[i-1][0] == 0) { - i--; - } - - if (numlines) *numlines = i; - - return ret; -} - - -/** -load a file into memory and return an array of pointers to lines in the file -must be freed with talloc_free(). -**/ -_PUBLIC_ char **file_lines_load(const char *fname, int *numlines, TALLOC_CTX *mem_ctx) -{ - char *p; - size_t size; - - p = file_load(fname, &size, mem_ctx); - if (!p) return NULL; - - return file_lines_parse(p, size, numlines, mem_ctx); -} - -/** -load a fd into memory and return an array of pointers to lines in the file -must be freed with talloc_free(). If convert is true calls unix_to_dos on -the list. -**/ -_PUBLIC_ char **fd_lines_load(int fd, int *numlines, TALLOC_CTX *mem_ctx) -{ - char *p; - size_t size; - - p = fd_load(fd, &size, mem_ctx); - if (!p) return NULL; - - return file_lines_parse(p, size, numlines, mem_ctx); -} - - -/** -take a list of lines and modify them to produce a list where \ continues -a line -**/ -_PUBLIC_ void file_lines_slashcont(char **lines) -{ - int i, j; - - for (i=0; lines[i];) { - int len = strlen(lines[i]); - if (lines[i][len-1] == '\\') { - lines[i][len-1] = ' '; - if (lines[i+1]) { - char *p = &lines[i][len]; - while (p < lines[i+1]) *p++ = ' '; - for (j = i+1; lines[j]; j++) lines[j] = lines[j+1]; - } - } else { - i++; - } - } -} - -/** - save a lump of data into a file. Mostly used for debugging -*/ -_PUBLIC_ bool file_save(const char *fname, const void *packet, size_t length) -{ - int fd; - fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0644); - if (fd == -1) { - return false; - } - if (write(fd, packet, length) != (size_t)length) { - return false; - } - close(fd); - return true; -} - -_PUBLIC_ int vfdprintf(int fd, const char *format, va_list ap) -{ - char *p; - int len, ret; - va_list ap2; - - va_copy(ap2, ap); - len = vasprintf(&p, format, ap2); - va_end(ap2); - if (len <= 0) return len; - ret = write(fd, p, len); - SAFE_FREE(p); - return ret; -} - -_PUBLIC_ int fdprintf(int fd, const char *format, ...) -{ - va_list ap; - int ret; - - va_start(ap, format); - ret = vfdprintf(fd, format, ap); - va_end(ap); - return ret; -} - - -/* - try to determine if the filesystem supports large files -*/ -_PUBLIC_ bool large_file_support(const char *path) -{ - int fd; - ssize_t ret; - char c; - - fd = open(path, O_RDWR|O_CREAT, 0600); - unlink(path); - if (fd == -1) { - /* have to assume large files are OK */ - return true; - } - ret = pread(fd, &c, 1, ((uint64_t)1)<<32); - close(fd); - return ret == 0; -} -- cgit