diff options
Diffstat (limited to 'contrib/binutils/libiberty/choose-temp.c')
-rw-r--r-- | contrib/binutils/libiberty/choose-temp.c | 112 |
1 files changed, 82 insertions, 30 deletions
diff --git a/contrib/binutils/libiberty/choose-temp.c b/contrib/binutils/libiberty/choose-temp.c index 5668f74..826d818 100644 --- a/contrib/binutils/libiberty/choose-temp.c +++ b/contrib/binutils/libiberty/choose-temp.c @@ -17,22 +17,24 @@ License along with libiberty; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -/* This file exports one function: choose_temp_base. */ +/* This file exports two functions: choose_temp_base and make_temp_file. */ -/* This file lives in at least two places: libiberty and gcc. - Don't change one without the other. */ - -#if defined (IN_GCC) || defined (HAVE_CONFIG_H) +#ifdef HAVE_CONFIG_H #include "config.h" #endif -/* If we are in gcc, or we have a config.h, we assume that - HAVE_SYS_FILE_H tells us whether to include sys/file.h. However, - libiberty does not have a config.h, and instead arranges to define - NO_SYS_FILE_H on the command line when there is no sys/file.h. */ - -#if (defined (IN_GCC) || defined (HAVE_CONFIG_H)) ? defined (HAVE_SYS_FILE_H) : ! defined (NO_SYS_FILE_H) +#include <stdio.h> /* May get P_tmpdir. */ #include <sys/types.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#ifdef HAVE_STRING_H +#include <string.h> +#endif +#ifdef HAVE_SYS_FILE_H #include <sys/file.h> /* May get R_OK, etc. on some systems. */ #endif @@ -42,15 +44,11 @@ Boston, MA 02111-1307, USA. */ #define X_OK 1 #endif -#include <stdio.h> /* May get P_tmpdir. */ - -#ifdef IN_GCC -#include "gansidecl.h" -extern char *xmalloc (); -#else -#include "ansidecl.h" #include "libiberty.h" -#if defined (__MSDOS__) || defined (_WIN32) +extern int mkstemps (); + +#ifndef IN_GCC +#if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN__) && ! defined (_UWIN)) #define DIR_SEPARATOR '\\' #endif #endif @@ -96,7 +94,10 @@ try (dir, base) /* Return a prefix for temporary file names or NULL if unable to find one. The current directory is chosen if all else fails so the program is exited if a temporary directory can't be found (mktemp fails). - The buffer for the result is obtained with xmalloc. */ + The buffer for the result is obtained with xmalloc. + + This function is provided for backwards compatability only. It use + is not recommended. */ char * choose_temp_base () @@ -107,7 +108,6 @@ choose_temp_base () static char tmp[] = { DIR_SEPARATOR, 't', 'm', 'p', 0 }; static char usrtmp[] = { DIR_SEPARATOR, 'u', 's', 'r', DIR_SEPARATOR, 't', 'm', 'p', 0 }; -#ifndef MPW base = try (getenv ("TMPDIR"), base); base = try (getenv ("TMP"), base); base = try (getenv ("TEMP"), base); @@ -124,24 +124,15 @@ choose_temp_base () if (base == 0) base = "."; -#else /* MPW */ - base = ":"; -#endif - len = strlen (base); temp_filename = xmalloc (len + 1 /*DIR_SEPARATOR*/ + strlen (TEMP_FILE) + 1); strcpy (temp_filename, base); -#ifndef MPW if (len != 0 && temp_filename[len-1] != '/' && temp_filename[len-1] != DIR_SEPARATOR) temp_filename[len++] = DIR_SEPARATOR; -#else /* MPW */ - if (temp_filename[len-1] != ':') - temp_filename[len++] = ':'; -#endif /* MPW */ strcpy (temp_filename + len, TEMP_FILE); mktemp (temp_filename); @@ -149,3 +140,64 @@ choose_temp_base () abort (); return temp_filename; } +/* Return a temporary file name (as a string) or NULL if unable to create + one. */ + +char * +make_temp_file (suffix) + const char *suffix; +{ + char *base = 0; + char *temp_filename; + int base_len, suffix_len; + int fd; + static char tmp[] = { DIR_SEPARATOR, 't', 'm', 'p', 0 }; + static char usrtmp[] = { DIR_SEPARATOR, 'u', 's', 'r', DIR_SEPARATOR, 't', 'm', 'p', 0 }; + + base = try (getenv ("TMPDIR"), base); + base = try (getenv ("TMP"), base); + base = try (getenv ("TEMP"), base); + +#ifdef P_tmpdir + base = try (P_tmpdir, base); +#endif + + /* Try /usr/tmp, then /tmp. */ + base = try (usrtmp, base); + base = try (tmp, base); + + /* If all else fails, use the current directory! */ + if (base == 0) + base = "."; + + base_len = strlen (base); + + if (suffix) + suffix_len = strlen (suffix); + else + suffix_len = 0; + + temp_filename = xmalloc (base_len + 1 /*DIR_SEPARATOR*/ + + strlen (TEMP_FILE) + + suffix_len + 1); + strcpy (temp_filename, base); + + if (base_len != 0 + && temp_filename[base_len-1] != '/' + && temp_filename[base_len-1] != DIR_SEPARATOR) + temp_filename[base_len++] = DIR_SEPARATOR; + strcpy (temp_filename + base_len, TEMP_FILE); + + if (suffix) + strcat (temp_filename, suffix); + + fd = mkstemps (temp_filename, suffix_len); + /* If mkstemps failed, then something bad is happening. Maybe we should + issue a message about a possible security attack in progress? */ + if (fd == -1) + abort (); + /* Similarly if we can not close the file. */ + if (close (fd)) + abort (); + return temp_filename; +} |