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sftpserver.c: Add support for O_TRUNC while opening files

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Signed-off-by: Eshan Kelkar <eshankelkar@galorithm.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
This commit is contained in:
Eshan Kelkar 2025-03-15 17:50:33 +05:30 • committed by Jakub Jelen
parent 6c4e4a9e1c
commit a59d587060
1 changed files with 18 additions and 9 deletions
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27
src/sftpserver.c
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@ -882,17 +882,26 @@ process_open(sftp_client_message client_msg)
SSH_LOG(SSH_LOG_PROTOCOL, "Processing open: filename %s, mode=0%o" PRIu32,
filename, mode);
if (((msg_flag & (uint32_t)SSH_FXF_READ) == SSH_FXF_READ) &&
((msg_flag & (uint32_t)SSH_FXF_WRITE) == SSH_FXF_WRITE)) {
file_flag = O_RDWR; // file must exist
if ((msg_flag & (uint32_t)SSH_FXF_CREAT) == SSH_FXF_CREAT)
file_flag |= O_CREAT;
} else if ((msg_flag & (uint32_t)SSH_FXF_WRITE) == SSH_FXF_WRITE) {
file_flag = O_WRONLY;
if ((msg_flag & (uint32_t)SSH_FXF_APPEND) == SSH_FXF_APPEND)
if ((msg_flag & (uint32_t)SSH_FXF_WRITE) == SSH_FXF_WRITE) {
if ((msg_flag & (uint32_t)SSH_FXF_READ) == SSH_FXF_READ) {
/* Both read and write */
file_flag = O_RDWR;
} else {
/* Only write */
file_flag = O_WRONLY;
}
if ((msg_flag & (uint32_t)SSH_FXF_APPEND) == SSH_FXF_APPEND) {
file_flag |= O_APPEND;
if ((msg_flag & (uint32_t)SSH_FXF_CREAT) == SSH_FXF_CREAT)
}
if ((msg_flag & (uint32_t)SSH_FXF_CREAT) == SSH_FXF_CREAT) {
file_flag |= O_CREAT;
}
if ((msg_flag & (uint32_t)SSH_FXF_TRUNC) == SSH_FXF_TRUNC) {
file_flag |= O_TRUNC;
}
} else if ((msg_flag & (uint32_t)SSH_FXF_READ) == SSH_FXF_READ) {
file_flag = O_RDONLY;
} else {