diff options
Diffstat (limited to 'bfd/opncls.c')
| -rw-r--r-- | bfd/opncls.c | 128 |
1 files changed, 69 insertions, 59 deletions
diff --git a/bfd/opncls.c b/bfd/opncls.c index 0e4eb8a..e675510 100644 --- a/bfd/opncls.c +++ b/bfd/opncls.c @@ -128,14 +128,18 @@ SECTION /* FUNCTION - bfd_openr + bfd_fopen SYNOPSIS - bfd *bfd_openr (const char *filename, const char *target); + bfd *bfd_fopen (const char *filename, const char *target, + const char *mode, int fd); DESCRIPTION - Open the file @var{filename} (using <<fopen>>) with the target - @var{target}. Return a pointer to the created BFD. + Open the file @var{filename} with the target @var{target}. + Return a pointer to the created BFD. If @var{fd} is not -1, + then <<fdopen>> is used to open the file; otherwise, <<fopen>> + is used. @var{mode} is passed directly to <<fopen>> or + <<fdopen>>. Calls <<bfd_find_target>>, so @var{target} is interpreted as by that function. @@ -146,11 +150,13 @@ DESCRIPTION */ bfd * -bfd_openr (const char *filename, const char *target) +bfd_fopen (const char *filename, const char *target, const char *mode, int fd) { bfd *nbfd; const bfd_target *target_vec; + bfd_set_error (bfd_error_system_call); + nbfd = _bfd_new_bfd (); if (nbfd == NULL) return NULL; @@ -161,21 +167,67 @@ bfd_openr (const char *filename, const char *target) _bfd_delete_bfd (nbfd); return NULL; } + +#ifdef HAVE_FDOPEN + if (fd != -1) + nbfd->iostream = fdopen (fd, mode); + else +#endif + nbfd->iostream = fopen (filename, mode); + if (nbfd->iostream == NULL) + { + _bfd_delete_bfd (nbfd); + return NULL; + } + /* OK, put everything where it belongs. */ nbfd->filename = filename; - nbfd->direction = read_direction; - if (bfd_open_file (nbfd) == NULL) + /* Figure out whether the user is opening the file for reading, + writing, or both, by looking at the MODE argument. */ + if ((mode[0] == 'r' || mode[0] == 'w' || mode[0] == 'a') + && mode[1] == '+') + nbfd->direction = both_direction; + else if (mode[0] == 'r') + nbfd->direction = read_direction; + else + nbfd->direction = write_direction; + + if (! bfd_cache_init (nbfd)) { - /* File didn't exist, or some such. */ - bfd_set_error (bfd_error_system_call); _bfd_delete_bfd (nbfd); return NULL; } + nbfd->opened_once = TRUE; return nbfd; } +/* +FUNCTION + bfd_openr + +SYNOPSIS + bfd *bfd_openr (const char *filename, const char *target); + +DESCRIPTION + Open the file @var{filename} (using <<fopen>>) with the target + @var{target}. Return a pointer to the created BFD. + + Calls <<bfd_find_target>>, so @var{target} is interpreted as by + that function. + + If <<NULL>> is returned then an error has occured. Possible errors + are <<bfd_error_no_memory>>, <<bfd_error_invalid_target>> or + <<system_call>> error. +*/ + +bfd * +bfd_openr (const char *filename, const char *target) +{ + return bfd_fopen (filename, target, FOPEN_RB, -1); +} + /* Don't try to `optimize' this function: o - We lock using stack space so that interrupting the locking @@ -212,72 +264,30 @@ DESCRIPTION bfd * bfd_fdopenr (const char *filename, const char *target, int fd) { - bfd *nbfd; - const bfd_target *target_vec; + const char *mode; +#if defined(HAVE_FCNTL) && defined(F_GETFL) int fdflags; +#endif bfd_set_error (bfd_error_system_call); #if ! defined(HAVE_FCNTL) || ! defined(F_GETFL) - fdflags = O_RDWR; /* Assume full access. */ + mode = FOPEN_RUB; /* Assume full access. */ #else fdflags = fcntl (fd, F_GETFL, NULL); -#endif if (fdflags == -1) return NULL; - nbfd = _bfd_new_bfd (); - if (nbfd == NULL) - return NULL; - - target_vec = bfd_find_target (target, nbfd); - if (target_vec == NULL) - { - _bfd_delete_bfd (nbfd); - return NULL; - } - -#ifndef HAVE_FDOPEN - nbfd->iostream = fopen (filename, FOPEN_RB); -#else /* (O_ACCMODE) parens are to avoid Ultrix header file bug. */ switch (fdflags & (O_ACCMODE)) { - case O_RDONLY: nbfd->iostream = fdopen (fd, FOPEN_RB); break; - case O_WRONLY: nbfd->iostream = fdopen (fd, FOPEN_RUB); break; - case O_RDWR: nbfd->iostream = fdopen (fd, FOPEN_RUB); break; + case O_RDONLY: mode = FOPEN_RB; + case O_WRONLY: mode = FOPEN_RUB; + case O_RDWR: mode = FOPEN_RUB; default: abort (); } #endif - if (nbfd->iostream == NULL) - { - _bfd_delete_bfd (nbfd); - return NULL; - } - - /* OK, put everything where it belongs. */ - nbfd->filename = filename; - - /* As a special case we allow a FD open for read/write to - be written through, although doing so requires that we end - the previous clause with a preposition. */ - /* (O_ACCMODE) parens are to avoid Ultrix header file bug. */ - switch (fdflags & (O_ACCMODE)) - { - case O_RDONLY: nbfd->direction = read_direction; break; - case O_WRONLY: nbfd->direction = write_direction; break; - case O_RDWR: nbfd->direction = both_direction; break; - default: abort (); - } - - if (! bfd_cache_init (nbfd)) - { - _bfd_delete_bfd (nbfd); - return NULL; - } - nbfd->opened_once = TRUE; - - return nbfd; + return bfd_fopen (filename, target, mode, fd); } /* |