133 lines
2.3 KiB
C
133 lines
2.3 KiB
C
/* efopen.c
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Open a stdio file with appropriate permissions. */
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#include "uucp.h"
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#include "uudefs.h"
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#include "sysdep.h"
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#include "system.h"
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#include <errno.h>
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#if HAVE_FCNTL_H
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#include <fcntl.h>
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#else
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#if HAVE_SYS_FILE_H
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#include <sys/file.h>
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#endif
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#endif
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#ifndef O_RDONLY
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#define O_RDONLY 0
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#define O_WRONLY 1
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#define O_RDWR 2
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#endif
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#ifndef O_APPEND
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#ifdef FAPPEND
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#define O_APPEND FAPPEND
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#endif
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#endif
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#ifndef O_NOCTTY
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#define O_NOCTTY 0
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#endif
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#ifndef FD_CLOEXEC
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#define FD_CLOEXEC 1
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#endif
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FILE *
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esysdep_fopen (zfile, fpublic, fappend, fmkdirs)
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const char *zfile;
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boolean fpublic;
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boolean fappend;
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boolean fmkdirs;
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{
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int imode;
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int o;
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FILE *e;
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if (fpublic)
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imode = IPUBLIC_FILE_MODE;
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else
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imode = IPRIVATE_FILE_MODE;
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if (! fappend)
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o = creat ((char *) zfile, imode);
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else
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{
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#ifdef O_CREAT
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o = open ((char *) zfile,
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O_WRONLY | O_APPEND | O_CREAT | O_NOCTTY,
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imode);
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#else
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o = open ((char *) zfile, O_WRONLY | O_NOCTTY);
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if (o < 0 && errno == ENOENT)
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o = creat ((char *) zfile, imode);
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#endif /* ! defined (O_CREAT) */
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}
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if (o < 0)
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{
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if (errno == ENOENT && fmkdirs)
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{
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if (! fsysdep_make_dirs (zfile, fpublic))
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return NULL;
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if (! fappend)
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o = creat ((char *) zfile, imode);
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else
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{
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#ifdef O_CREAT
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o = open ((char *) zfile,
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O_WRONLY | O_APPEND | O_CREAT | O_NOCTTY,
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imode);
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#else
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o = creat ((char *) zfile, imode);
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#endif
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}
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}
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if (o < 0)
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{
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ulog (LOG_ERROR, "open (%s): %s", zfile, strerror (errno));
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return NULL;
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}
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}
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#ifndef O_CREAT
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#ifdef O_APPEND
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if (fappend)
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{
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if (fcntl (o, F_SETFL, O_APPEND) < 0)
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{
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ulog (LOG_ERROR, "fcntl (%s, O_APPEND): %s", zfile,
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strerror (errno));
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(void) close (o);
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return NULL;
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}
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}
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#endif /* defined (O_APPEND) */
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#endif /* ! defined (O_CREAT) */
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if (fcntl (o, F_SETFD, fcntl (o, F_GETFD, 0) | FD_CLOEXEC) < 0)
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{
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ulog (LOG_ERROR, "fcntl (%s, FD_CLOEXEC): %s", zfile,
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strerror (errno));
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(void) close (o);
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return NULL;
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}
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if (fappend)
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e = fdopen (o, (char *) "a");
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else
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e = fdopen (o, (char *) "w");
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if (e == NULL)
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{
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ulog (LOG_ERROR, "fdopen: %s", strerror (errno));
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(void) close (o);
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}
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return e;
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}
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