diff options
author | Steve Langasek <steve.langasek@ubuntu.com> | 2019-01-03 16:26:05 -0800 |
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committer | Steve Langasek <steve.langasek@ubuntu.com> | 2019-01-03 17:26:38 -0800 |
commit | 9c52e721044e7501c3d4567b36d222dc7326224a (patch) | |
tree | 9011790770130c60a712a6f125ad50d60e07cc74 /libpam/pam_modutil_ioloop.c | |
parent | 9727ff2a3fa0e94a42b34a579027bacf4146d571 (diff) | |
parent | 186ff16e8d12ff15d518000c17f115ccab5275a4 (diff) |
New upstream version 1.0.1
Diffstat (limited to 'libpam/pam_modutil_ioloop.c')
-rw-r--r-- | libpam/pam_modutil_ioloop.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/libpam/pam_modutil_ioloop.c b/libpam/pam_modutil_ioloop.c new file mode 100644 index 00000000..d23f007a --- /dev/null +++ b/libpam/pam_modutil_ioloop.c @@ -0,0 +1,53 @@ +/* + * $Id: pam_modutil_ioloop.c,v 1.1 2005/09/21 10:00:58 t8m Exp $ + * + * These functions provides common methods for ensure a complete read or + * write occurs. It handles EINTR and partial read/write returns. + */ + +#include "pam_modutil_private.h" + +#include <unistd.h> +#include <errno.h> + +int +pam_modutil_read(int fd, char *buffer, int count) +{ + int block, offset = 0; + + while (count > 0) { + block = read(fd, &buffer[offset], count); + + if (block < 0) { + if (errno == EINTR) continue; + return block; + } + if (block == 0) return offset; + + offset += block; + count -= block; + } + + return offset; +} + +int +pam_modutil_write(int fd, const char *buffer, int count) +{ + int block, offset = 0; + + while (count > 0) { + block = write(fd, &buffer[offset], count); + + if (block < 0) { + if (errno == EINTR) continue; + return block; + } + if (block == 0) return offset; + + offset += block; + count -= block; + } + + return offset; +} |