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#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include "config.h"
#include "database.h"
#include "log.h"
unsigned int flags2mode(int flags)
{
unsigned int mode = 0;
if(!O_RDONLY)
{
if(flags & O_WRONLY)
mode |= FILE_WRITE;
else if(flags & O_RDWR)
mode |= FILE_READ | FILE_WRITE;
else
mode |= FILE_READ;
}
else if(!O_WRONLY)
{
if(flags & O_RDONLY)
mode |= FILE_READ;
else if(flags & O_RDWR)
mode |= FILE_READ | FILE_WRITE;
else
mode |= FILE_WRITE;
}
else
{
if( (flags & (O_RDONLY | O_WRONLY)) == (O_RDONLY | O_WRONLY) )
log_error(0, "encountered bogus open() flags O_RDONLY|O_WRONLY");
/* Carry on anyway */
if(flags & O_RDONLY)
mode |= FILE_READ;
if(flags & O_WRONLY)
mode |= FILE_WRITE;
if(flags & O_RDWR)
mode |= FILE_READ | FILE_WRITE;
if( (mode & FILE_READ) && (mode & FILE_WRITE) && (flags & O_TRUNC) )
/* If O_TRUNC is set, consider this a write */
mode &= ~FILE_READ;
}
return mode;
}
char *abspath(const char *wd, const char *path)
{
size_t len_wd = strlen(wd);
if(wd[len_wd-1] == '/')
{
/* LCOV_EXCL_START : We usually get canonical path names, so we don't
* run into this one */
char *result = malloc(len_wd + strlen(path) + 1);
memcpy(result, wd, len_wd);
strcpy(result + len_wd, path);
return result;
/* LCOV_EXCL_STOP */
}
else
{
char *result = malloc(len_wd + 1 + strlen(path) + 1);
memcpy(result, wd, len_wd);
result[len_wd] = '/';
strcpy(result + len_wd + 1, path);
return result;
}
}
char *get_wd(void)
{
/* PATH_MAX has issues, don't use it */
size_t size = 1024;
char *path;
for(;;)
{
path = malloc(size);
if(getcwd(path, size) != NULL)
return path;
else
{
if(errno != ERANGE)
{
/* LCOV_EXCL_START : getcwd() really shouldn't fail */
free(path);
log_error(0, "getcwd failed: %s", strerror(errno));
return strdup("/UNKNOWN");
/* LCOV_EXCL_STOP */
}
free(path);
size <<= 1;
}
}
}
char *read_line(char *buffer, size_t *size, FILE *fp)
{
size_t pos = 0;
if(buffer == NULL)
{
*size = 4096;
buffer = malloc(*size);
}
for(;;)
{
char c;
{
int t = getc(fp);
if(t == EOF)
{
free(buffer);
return NULL;
}
c = t;
}
if(c == '\n')
{
buffer[pos] = '\0';
return buffer;
}
else
{
if(pos + 1 >= *size)
{
*size <<= 2;
buffer = realloc(buffer, *size);
}
buffer[pos++] = c;
}
}
}
int path_is_dir(const char *pathname)
{
struct stat buf;
if(lstat(pathname, &buf) != 0)
{
/* LCOV_EXCL_START : shouldn't happen because a tracer process just
* accessed it */
log_error(0, "error stat()ing %s: %s", pathname, strerror(errno));
return 0;
/* LCOV_EXCL_STOP */
}
return S_ISDIR(buf.st_mode)?1:0;
}
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